diff --git a/NSun-S/.gitignore b/NSun-S/.gitignore
new file mode 100644
index 00000000..6b721575
--- /dev/null
+++ b/NSun-S/.gitignore
@@ -0,0 +1,34 @@
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+*.vs
\ No newline at end of file
diff --git a/NSun-S/Project1/Debug/Project1.ilk b/NSun-S/Project1/Debug/Project1.ilk
new file mode 100644
index 00000000..fdccdc50
Binary files /dev/null and b/NSun-S/Project1/Debug/Project1.ilk differ
diff --git a/NSun-S/Project1/Debug/Project1.pdb b/NSun-S/Project1/Debug/Project1.pdb
new file mode 100644
index 00000000..f36ea5a3
Binary files /dev/null and b/NSun-S/Project1/Debug/Project1.pdb differ
diff --git a/NSun-S/Project1/Debug/UnitTest1.exp b/NSun-S/Project1/Debug/UnitTest1.exp
new file mode 100644
index 00000000..c6dc6984
Binary files /dev/null and b/NSun-S/Project1/Debug/UnitTest1.exp differ
diff --git a/NSun-S/Project1/Debug/UnitTest1.ilk b/NSun-S/Project1/Debug/UnitTest1.ilk
new file mode 100644
index 00000000..4dd37417
Binary files /dev/null and b/NSun-S/Project1/Debug/UnitTest1.ilk differ
diff --git a/NSun-S/Project1/Debug/UnitTest1.pdb b/NSun-S/Project1/Debug/UnitTest1.pdb
new file mode 100644
index 00000000..d2daeb22
Binary files /dev/null and b/NSun-S/Project1/Debug/UnitTest1.pdb differ
diff --git a/NSun-S/Project1/Project1.sln b/NSun-S/Project1/Project1.sln
new file mode 100644
index 00000000..f1f5b8f1
--- /dev/null
+++ b/NSun-S/Project1/Project1.sln
@@ -0,0 +1,41 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29326.143
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Project1", "Project1\Project1.vcxproj", "{1F525612-0B6E-45C1-BCE5-06A9346E26CA}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "UnitTest1", "UnitTest1\UnitTest1.vcxproj", "{4BA9AF09-E866-4BBF-85A1-803BA0067796}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{1F525612-0B6E-45C1-BCE5-06A9346E26CA}.Debug|x64.ActiveCfg = Debug|x64
+		{1F525612-0B6E-45C1-BCE5-06A9346E26CA}.Debug|x64.Build.0 = Debug|x64
+		{1F525612-0B6E-45C1-BCE5-06A9346E26CA}.Debug|x86.ActiveCfg = Debug|Win32
+		{1F525612-0B6E-45C1-BCE5-06A9346E26CA}.Debug|x86.Build.0 = Debug|Win32
+		{1F525612-0B6E-45C1-BCE5-06A9346E26CA}.Release|x64.ActiveCfg = Release|x64
+		{1F525612-0B6E-45C1-BCE5-06A9346E26CA}.Release|x64.Build.0 = Release|x64
+		{1F525612-0B6E-45C1-BCE5-06A9346E26CA}.Release|x86.ActiveCfg = Release|Win32
+		{1F525612-0B6E-45C1-BCE5-06A9346E26CA}.Release|x86.Build.0 = Release|Win32
+		{4BA9AF09-E866-4BBF-85A1-803BA0067796}.Debug|x64.ActiveCfg = Debug|x64
+		{4BA9AF09-E866-4BBF-85A1-803BA0067796}.Debug|x64.Build.0 = Debug|x64
+		{4BA9AF09-E866-4BBF-85A1-803BA0067796}.Debug|x86.ActiveCfg = Debug|Win32
+		{4BA9AF09-E866-4BBF-85A1-803BA0067796}.Debug|x86.Build.0 = Debug|Win32
+		{4BA9AF09-E866-4BBF-85A1-803BA0067796}.Release|x64.ActiveCfg = Release|x64
+		{4BA9AF09-E866-4BBF-85A1-803BA0067796}.Release|x64.Build.0 = Release|x64
+		{4BA9AF09-E866-4BBF-85A1-803BA0067796}.Release|x86.ActiveCfg = Release|Win32
+		{4BA9AF09-E866-4BBF-85A1-803BA0067796}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {BD6CF3B2-2C8B-4EF1-8A88-BB781BC881C8}
+	EndGlobalSection
+EndGlobal
diff --git a/NSun-S/Project1/Project1/Calculator.cpp b/NSun-S/Project1/Project1/Calculator.cpp
new file mode 100644
index 00000000..9b095783
--- /dev/null
+++ b/NSun-S/Project1/Project1/Calculator.cpp
@@ -0,0 +1,183 @@
+
+
+#include "stdafx.h"
+#include <stack>
+#include <vector>
+#include <iostream>
+#include <fstream>
+#include <ios>
+#include "stdlib.h"
+#include <ctime>
+#include <string>
+#include "Calculator.h"
+
+#define random(a,b) (rand()%(b-a+1)+a)
+
+using namespace std;
+
+Calculator::Calculator() {}
+
+string Calculator::MakeFormula()
+{
+	string formula = "";
+	
+	int count = random(2, 3);
+	int start = 0;
+	int number1 = random(1, 100);
+	
+	formula += to_string(number1);
+	while (start < count)
+	{
+		int operation = random(0, 3);
+		int number2 = random(1, 100);
+		if (operation == 3)
+		{
+			while (!(number1 % number2 == 0))
+			{
+				number2 = random(1, number1);
+			}
+			number1 = number1 / number2;
+		}
+		else
+		{
+			number1 = number2;
+		}
+		formula += op[operation] + to_string(number2);
+		start++;
+	}
+	return formula;
+};
+
+string Calculator::Solve(string formula)
+{
+	vector<string>* tempStack = new vector<string>();
+	stack<char>* operatorStack = new stack<char>();
+	int len = formula.length();
+	//cout << formula.substr(2, 3) << endl;
+	int k = 0;
+	for (int j = -1; j < len - 1; j++)
+	{
+		char formulaChar = formula[j + 1];
+		if (j == len - 2 || formulaChar == '+' || formulaChar == '-' ||
+			formulaChar == '*' || formulaChar == '/')
+		{
+			if (j == len - 2)
+			{
+				tempStack->push_back(formula.substr(k));
+			}
+			else
+			{
+				if (k < j + 1)//////////////////////////////
+				{
+					tempStack->push_back(formula.substr(k, j + 1 - k));
+					//cout << formula.substr(k, j + 1) << k << j+1<< endl;
+				}
+				if (operatorStack->empty())
+				{
+					operatorStack->push(formulaChar);
+				}
+				else
+				{
+					char stackChar = operatorStack->top();
+					if ((stackChar == '+' || stackChar == '-')
+						&& (formulaChar == '*' || formulaChar == '/'))
+					{
+						operatorStack->push(formulaChar);
+					}
+					else
+					{
+						//tempStack->push_back(to_string(operatorStack->top()));
+						if ((formulaChar == '+' || formulaChar == '-'))
+						{
+							while (!operatorStack->empty())
+							{
+								tempStack->push_back(string(1, operatorStack->top()));
+								operatorStack->pop();
+
+							}
+						}
+						else
+						{
+							while (!operatorStack->empty()&&!(operatorStack->top()=='+'|| operatorStack->top() == '-'))
+							{
+								tempStack->push_back(string(1, operatorStack->top()));
+								operatorStack->pop();
+
+							}
+						}
+						operatorStack->push(formulaChar);
+					}
+				}
+			}
+			k = j + 2;
+		}
+	}
+	while (!operatorStack->empty())
+	{
+		tempStack->push_back(string(1, operatorStack->top()));
+		operatorStack->pop();
+	}
+	stack<string>* calcStack = new stack<string>();
+	for (int i = 0; i < tempStack->size(); i++)
+	{
+		string peekChar = tempStack->at(i);
+		if (peekChar != "+" && peekChar != "-"
+			&& peekChar != "/" && peekChar != "*")
+		{
+			calcStack->push(peekChar);
+		}
+		else
+		{
+			int a1 = 0;
+			int b1 = 0;
+			if (!calcStack->empty())
+			{
+				b1 = stoi(calcStack->top());
+				calcStack->pop();
+			}
+			if (!calcStack->empty())
+			{
+				a1 = stoi(calcStack->top());
+				calcStack->pop();
+			}
+			if (peekChar == "+")
+			{
+				calcStack->push(to_string(a1 + b1));
+			}
+			else if (peekChar == "-")
+			{
+				calcStack->push(to_string(a1 - b1));
+			}
+			else if (peekChar == "*")
+			{
+				calcStack->push(to_string(a1 * b1));
+			}
+			else if (peekChar == "/")
+			{
+				calcStack->push(to_string(a1 / b1));
+			}
+		}
+	}
+	return formula + "=" + calcStack->top();
+}
+
+int main(int   argc, char* argv[])
+{
+	int n;
+	n = stoi(argv[1]);
+	//cin >> n;
+	std::fstream output("subject.txt", ios::out);
+	Calculator* calc = new Calculator();
+	srand((unsigned int)time(NULL));
+	for(int i = 0; i < n; i++){
+		string question = calc->MakeFormula();
+		//cout << question << endl;
+		string ret = calc->Solve(question);
+		output << ret << endl;
+		//cout << ret << endl;
+		//getchar();
+	}
+	output.close();
+}
+
+
diff --git a/NSun-S/Project1/Project1/Calculator.h b/NSun-S/Project1/Project1/Calculator.h
new file mode 100644
index 00000000..43792f27
--- /dev/null
+++ b/NSun-S/Project1/Project1/Calculator.h
@@ -0,0 +1,19 @@
+#pragma once
+#include "stdafx.h"
+#include <stack>
+#include <vector>
+#include <iostream>
+#include "stdlib.h"
+#include <ctime>
+#include <string>  
+using namespace std;
+
+class Calculator
+{
+private:
+	string op[4] = { "+", "-", "*", "/" };
+public:
+	Calculator();
+	string MakeFormula();
+	string Solve(string formula);
+};
diff --git a/NSun-S/Project1/Project1/Debug/Project1.Build.CppClean.log b/NSun-S/Project1/Project1/Debug/Project1.Build.CppClean.log
new file mode 100644
index 00000000..60d9bd19
--- /dev/null
+++ b/NSun-S/Project1/Project1/Debug/Project1.Build.CppClean.log
@@ -0,0 +1,3 @@
+d:\study\软件工程\lab0\calculator\nsun-s\project1\project1\debug\vc142.idb
+d:\study\软件工程\lab0\calculator\nsun-s\project1\project1\debug\vc142.pdb
+d:\study\软件工程\lab0\calculator\nsun-s\project1\project1\debug\project1.tlog\cl.command.1.tlog
diff --git a/NSun-S/Project1/Project1/Debug/Project1.log b/NSun-S/Project1/Project1/Debug/Project1.log
new file mode 100644
index 00000000..93455cb5
--- /dev/null
+++ b/NSun-S/Project1/Project1/Debug/Project1.log
@@ -0,0 +1,3 @@
+  Calculator.cpp
+D:\study\软件工程\lab0\Calculator\NSun-S\Project1\Project1\Calculator.cpp(121,20): warning C4018: “<”: 有符号/无符号不匹配
+  Project1.vcxproj -> D:\study\软件工程\lab0\Calculator\NSun-S\Project1\Debug\Project1.exe
diff --git a/NSun-S/Project1/Project1/Debug/Project1.stdafx b/NSun-S/Project1/Project1/Debug/Project1.stdafx
new file mode 100644
index 00000000..969accef
Binary files /dev/null and b/NSun-S/Project1/Project1/Debug/Project1.stdafx differ
diff --git a/NSun-S/Project1/Project1/Debug/Project1.tlog/CL.command.1.tlog b/NSun-S/Project1/Project1/Debug/Project1.tlog/CL.command.1.tlog
new file mode 100644
index 00000000..ab673080
Binary files /dev/null and b/NSun-S/Project1/Project1/Debug/Project1.tlog/CL.command.1.tlog differ
diff --git a/NSun-S/Project1/Project1/Debug/Project1.tlog/CL.read.1.tlog b/NSun-S/Project1/Project1/Debug/Project1.tlog/CL.read.1.tlog
new file mode 100644
index 00000000..84c5b11d
Binary files /dev/null and b/NSun-S/Project1/Project1/Debug/Project1.tlog/CL.read.1.tlog differ
diff --git a/NSun-S/Project1/Project1/Debug/Project1.tlog/CL.write.1.tlog b/NSun-S/Project1/Project1/Debug/Project1.tlog/CL.write.1.tlog
new file mode 100644
index 00000000..ba8f9e11
Binary files /dev/null and b/NSun-S/Project1/Project1/Debug/Project1.tlog/CL.write.1.tlog differ
diff --git a/NSun-S/Project1/Project1/Debug/Project1.tlog/Project1.lastbuildstate b/NSun-S/Project1/Project1/Debug/Project1.tlog/Project1.lastbuildstate
new file mode 100644
index 00000000..d64c3a72
--- /dev/null
+++ b/NSun-S/Project1/Project1/Debug/Project1.tlog/Project1.lastbuildstate
@@ -0,0 +1,2 @@
+#TargetFrameworkVersion=v4.0:PlatformToolSet=v142:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit:WindowsTargetPlatformVersion=10.0
+Debug|Win32|D:\study\软件工程\lab0\Calculator\NSun-S\Project1\|
diff --git a/NSun-S/Project1/Project1/Debug/Project1.tlog/link.command.1.tlog b/NSun-S/Project1/Project1/Debug/Project1.tlog/link.command.1.tlog
new file mode 100644
index 00000000..4788f847
Binary files /dev/null and b/NSun-S/Project1/Project1/Debug/Project1.tlog/link.command.1.tlog differ
diff --git a/NSun-S/Project1/Project1/Debug/Project1.tlog/link.read.1.tlog b/NSun-S/Project1/Project1/Debug/Project1.tlog/link.read.1.tlog
new file mode 100644
index 00000000..f9811f9f
Binary files /dev/null and b/NSun-S/Project1/Project1/Debug/Project1.tlog/link.read.1.tlog differ
diff --git a/NSun-S/Project1/Project1/Debug/Project1.tlog/link.write.1.tlog b/NSun-S/Project1/Project1/Debug/Project1.tlog/link.write.1.tlog
new file mode 100644
index 00000000..37bff7e6
Binary files /dev/null and b/NSun-S/Project1/Project1/Debug/Project1.tlog/link.write.1.tlog differ
diff --git a/NSun-S/Project1/Project1/Debug/Project1.vcxproj.FileListAbsolute.txt b/NSun-S/Project1/Project1/Debug/Project1.vcxproj.FileListAbsolute.txt
new file mode 100644
index 00000000..e69de29b
diff --git a/NSun-S/Project1/Project1/Debug/vc142.idb b/NSun-S/Project1/Project1/Debug/vc142.idb
new file mode 100644
index 00000000..0c4d3eb6
Binary files /dev/null and b/NSun-S/Project1/Project1/Debug/vc142.idb differ
diff --git a/NSun-S/Project1/Project1/Debug/vc142.pdb b/NSun-S/Project1/Project1/Debug/vc142.pdb
new file mode 100644
index 00000000..f853ecdf
Binary files /dev/null and b/NSun-S/Project1/Project1/Debug/vc142.pdb differ
diff --git a/NSun-S/Project1/Project1/Project1.vcxproj b/NSun-S/Project1/Project1/Project1.vcxproj
new file mode 100644
index 00000000..b064a78a
--- /dev/null
+++ b/NSun-S/Project1/Project1/Project1.vcxproj
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>16.0</VCProjectVersion>
+    <ProjectGuid>{1F525612-0B6E-45C1-BCE5-06A9346E26CA}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>Project1</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <PrecompiledHeaderFile>stdafx.h</PrecompiledHeaderFile>
+      <PrecompiledHeaderOutputFile>$(IntDir)$(TargetName).stdafx</PrecompiledHeaderOutputFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="stdafx.cpp">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Create</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="Calculator.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Calculator.h" />
+    <ClInclude Include="stdafx.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/NSun-S/Project1/Project1/Project1.vcxproj.filters b/NSun-S/Project1/Project1/Project1.vcxproj.filters
new file mode 100644
index 00000000..63496587
--- /dev/null
+++ b/NSun-S/Project1/Project1/Project1.vcxproj.filters
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="stdafx.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+    <ClCompile Include="Calculator.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Calculator.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+    <ClInclude Include="stdafx.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/NSun-S/Project1/Project1/Project1.vcxproj.user b/NSun-S/Project1/Project1/Project1.vcxproj.user
new file mode 100644
index 00000000..009eed3e
--- /dev/null
+++ b/NSun-S/Project1/Project1/Project1.vcxproj.user
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LocalDebuggerCommandArguments>10</LocalDebuggerCommandArguments>
+    <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
+  </PropertyGroup>
+</Project>
\ No newline at end of file
diff --git a/NSun-S/Project1/Project1/stdafx.cpp b/NSun-S/Project1/Project1/stdafx.cpp
new file mode 100644
index 00000000..2f94eeea
--- /dev/null
+++ b/NSun-S/Project1/Project1/stdafx.cpp
@@ -0,0 +1,5 @@
+// pch.cpp: 与预编译标头对应的源文件
+
+#include "stdafx.h"
+
+// 当使用预编译的头时，需要使用此源文件，编译才能成功。
\ No newline at end of file
diff --git a/NSun-S/Project1/Project1/stdafx.h b/NSun-S/Project1/Project1/stdafx.h
new file mode 100644
index 00000000..50de236b
--- /dev/null
+++ b/NSun-S/Project1/Project1/stdafx.h
@@ -0,0 +1,12 @@
+// pch.h: 这是预编译标头文件。
+// 下方列出的文件仅编译一次，提高了将来生成的生成性能。
+// 这还将影响 IntelliSense 性能，包括代码完成和许多代码浏览功能。
+// 但是，如果此处列出的文件中的任何一个在生成之间有更新，它们全部都将被重新编译。
+// 请勿在此处添加要频繁更新的文件，这将使得性能优势无效。
+
+#ifndef STDAFX_H
+#define STDAFX_H
+
+// 添加要在此处预编译的标头
+
+#endif //PCH_H
diff --git a/NSun-S/Project1/Project1/subject.txt b/NSun-S/Project1/Project1/subject.txt
new file mode 100644
index 00000000..4eb2d234
--- /dev/null
+++ b/NSun-S/Project1/Project1/subject.txt
@@ -0,0 +1,10 @@
+71/71+73*28=2045
+100-87/1=13
+46*84*7=27048
+80*86*27=185760
+47+3-99*25=-2425
+73+37*8/1=369
+15+70+97-20=162
+72+94/2+26=145
+26+96/3=58
+63*19/1=1197
diff --git a/NSun-S/Project1/UnitTest1/Debug/UnitTest1.log b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.log
new file mode 100644
index 00000000..e7ca09c7
--- /dev/null
+++ b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.log
@@ -0,0 +1 @@
+  UnitTest1.vcxproj -> D:\study\软件工程\lab0\Calculator\NSun-S\Project1\Debug\UnitTest1.dll
diff --git a/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/CL.command.1.tlog b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/CL.command.1.tlog
new file mode 100644
index 00000000..520ab06f
Binary files /dev/null and b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/CL.command.1.tlog differ
diff --git a/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/CL.read.1.tlog b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/CL.read.1.tlog
new file mode 100644
index 00000000..22746f90
Binary files /dev/null and b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/CL.read.1.tlog differ
diff --git a/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/CL.write.1.tlog b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/CL.write.1.tlog
new file mode 100644
index 00000000..6f2be5d7
Binary files /dev/null and b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/CL.write.1.tlog differ
diff --git a/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/UnitTest1.lastbuildstate b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/UnitTest1.lastbuildstate
new file mode 100644
index 00000000..d64c3a72
--- /dev/null
+++ b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/UnitTest1.lastbuildstate
@@ -0,0 +1,2 @@
+#TargetFrameworkVersion=v4.0:PlatformToolSet=v142:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit:WindowsTargetPlatformVersion=10.0
+Debug|Win32|D:\study\软件工程\lab0\Calculator\NSun-S\Project1\|
diff --git a/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/UnitTest1.write.1u.tlog b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/UnitTest1.write.1u.tlog
new file mode 100644
index 00000000..0e108e28
Binary files /dev/null and b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/UnitTest1.write.1u.tlog differ
diff --git a/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/link.command.1.tlog b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/link.command.1.tlog
new file mode 100644
index 00000000..0faef9ce
Binary files /dev/null and b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/link.command.1.tlog differ
diff --git a/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/link.read.1.tlog b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/link.read.1.tlog
new file mode 100644
index 00000000..64afb63b
Binary files /dev/null and b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/link.read.1.tlog differ
diff --git a/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/link.write.1.tlog b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/link.write.1.tlog
new file mode 100644
index 00000000..763cae7c
Binary files /dev/null and b/NSun-S/Project1/UnitTest1/Debug/UnitTest1.tlog/link.write.1.tlog differ
diff --git a/NSun-S/Project1/UnitTest1/Debug/vc142.idb b/NSun-S/Project1/UnitTest1/Debug/vc142.idb
new file mode 100644
index 00000000..3d24a10e
Binary files /dev/null and b/NSun-S/Project1/UnitTest1/Debug/vc142.idb differ
diff --git a/NSun-S/Project1/UnitTest1/Debug/vc142.pdb b/NSun-S/Project1/UnitTest1/Debug/vc142.pdb
new file mode 100644
index 00000000..bad274d2
Binary files /dev/null and b/NSun-S/Project1/UnitTest1/Debug/vc142.pdb differ
diff --git a/NSun-S/Project1/UnitTest1/UnitTest1.cpp b/NSun-S/Project1/UnitTest1/UnitTest1.cpp
new file mode 100644
index 00000000..3dfa045f
--- /dev/null
+++ b/NSun-S/Project1/UnitTest1/UnitTest1.cpp
@@ -0,0 +1,25 @@
+#include "pch.h"
+#include "CppUnitTest.h"
+#include "../Project1/calculator.h"
+using namespace Microsoft::VisualStudio::CppUnitTestFramework;
+
+namespace UnitTest1
+{
+	TEST_CLASS(UnitTest1)
+	{
+	public:
+		
+		TEST_METHOD(TestMethod1)
+		{
+			Calculator* calc = new Calculator();
+			string ret1 = calc->Solve("3+11*22");
+			Assert::AreEqual(ret1, (string)"3+11*22=245");
+			string ret2 = calc->Solve("3-5+2+3");
+			Assert::AreEqual(ret2, (string)"3-5+2+3=3");
+			string ret3 = calc->Solve("3-4*2+6");
+			Assert::AreEqual(ret3, (string)"3-4*2+6=1");
+			//string ret = calc->Solve("3+11*22");
+			//Assert::AreEqual(ret, (string)"11*22=245");
+		}
+	};
+}
diff --git a/NSun-S/Project1/UnitTest1/UnitTest1.vcxproj b/NSun-S/Project1/UnitTest1/UnitTest1.vcxproj
new file mode 100644
index 00000000..b53536e3
--- /dev/null
+++ b/NSun-S/Project1/UnitTest1/UnitTest1.vcxproj
@@ -0,0 +1,183 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>16.0</VCProjectVersion>
+    <ProjectGuid>{4BA9AF09-E866-4BBF-85A1-803BA0067796}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>UnitTest1</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+    <ProjectSubType>NativeUnitTestProject</ProjectSubType>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+    <UseOfMfc>false</UseOfMfc>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+    <UseOfMfc>false</UseOfMfc>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+    <UseOfMfc>false</UseOfMfc>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+    <UseOfMfc>false</UseOfMfc>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>$(VCInstallDir)UnitTest\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <UseFullPaths>true</UseFullPaths>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <AdditionalLibraryDirectories>$(VCInstallDir)UnitTest\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>..\Project1\Debug\Calculator.obj;..\Project1\Debug\stdafx.obj;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>$(VCInstallDir)UnitTest\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <UseFullPaths>true</UseFullPaths>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <AdditionalLibraryDirectories>$(VCInstallDir)UnitTest\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>$(VCInstallDir)UnitTest\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <UseFullPaths>true</UseFullPaths>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>$(VCInstallDir)UnitTest\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>$(VCInstallDir)UnitTest\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <UseFullPaths>true</UseFullPaths>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>$(VCInstallDir)UnitTest\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Create</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="UnitTest1.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Project1\Project1.vcxproj">
+      <Project>{1f525612-0b6e-45c1-bce5-06a9346e26ca}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/NSun-S/Project1/UnitTest1/UnitTest1.vcxproj.filters b/NSun-S/Project1/UnitTest1/UnitTest1.vcxproj.filters
new file mode 100644
index 00000000..6c4e107f
--- /dev/null
+++ b/NSun-S/Project1/UnitTest1/UnitTest1.vcxproj.filters
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="UnitTest1.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+    <ClCompile Include="pch.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/NSun-S/Project1/UnitTest1/UnitTest1.vcxproj.user b/NSun-S/Project1/UnitTest1/UnitTest1.vcxproj.user
new file mode 100644
index 00000000..88a55094
--- /dev/null
+++ b/NSun-S/Project1/UnitTest1/UnitTest1.vcxproj.user
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup />
+</Project>
\ No newline at end of file
diff --git a/NSun-S/Project1/UnitTest1/pch.cpp b/NSun-S/Project1/UnitTest1/pch.cpp
new file mode 100644
index 00000000..b6fb8f4a
--- /dev/null
+++ b/NSun-S/Project1/UnitTest1/pch.cpp
@@ -0,0 +1,5 @@
+// pch.cpp: 与预编译标头对应的源文件
+
+#include "pch.h"
+
+// 当使用预编译的头时，需要使用此源文件，编译才能成功。
diff --git a/NSun-S/Project1/UnitTest1/pch.h b/NSun-S/Project1/UnitTest1/pch.h
new file mode 100644
index 00000000..69fcd405
--- /dev/null
+++ b/NSun-S/Project1/UnitTest1/pch.h
@@ -0,0 +1,12 @@
+// pch.h: 这是预编译标头文件。
+// 下方列出的文件仅编译一次，提高了将来生成的生成性能。
+// 这还将影响 IntelliSense 性能，包括代码完成和许多代码浏览功能。
+// 但是，如果此处列出的文件中的任何一个在生成之间有更新，它们全部都将被重新编译。
+// 请勿在此处添加要频繁更新的文件，这将使得性能优势无效。
+
+#ifndef PCH_H
+#define PCH_H
+
+// 添加要在此处预编译的标头
+
+#endif //PCH_H