Olshanyy&Pronina cpp-project

Equel/.vs/ProjectSettings.json

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+{
+  "CurrentProjectSetting": "No Configurations"
+}

Equel/.vs/VSWorkspaceState.json

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+{
+  "ExpandedNodes": [
+    ""
+  ],
+  "SelectedNode": "\\Equel.sln",
+  "PreviewInSolutionExplorer": false
+}

Equel/Equel.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.27428.2043
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Equel", "Equel\Equel.vcxproj", "{FE06C801-59C7-4732-80E8-C2FF84675DD8}"
+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
+		{FE06C801-59C7-4732-80E8-C2FF84675DD8}.Debug|x64.ActiveCfg = Debug|x64
+		{FE06C801-59C7-4732-80E8-C2FF84675DD8}.Debug|x64.Build.0 = Debug|x64
+		{FE06C801-59C7-4732-80E8-C2FF84675DD8}.Debug|x86.ActiveCfg = Debug|Win32
+		{FE06C801-59C7-4732-80E8-C2FF84675DD8}.Debug|x86.Build.0 = Debug|Win32
+		{FE06C801-59C7-4732-80E8-C2FF84675DD8}.Release|x64.ActiveCfg = Release|x64
+		{FE06C801-59C7-4732-80E8-C2FF84675DD8}.Release|x64.Build.0 = Release|x64
+		{FE06C801-59C7-4732-80E8-C2FF84675DD8}.Release|x86.ActiveCfg = Release|Win32
+		{FE06C801-59C7-4732-80E8-C2FF84675DD8}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {44F85693-50C9-45A3-B804-D03B0A2F2B8A}
+	EndGlobalSection
+EndGlobal

Equel/Equel/CubEq.cpp

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+#include "CubEq.h"
+#include <fstream>
+
+
+CubEq::CubEq()
+{
+	inputCoef();
+
+	Zmist();
+
+	compSQR();
+
+	computeN();
+
+	if (n != 0 || n != 255)
+	{
+		x = new double[n];
+	}
+
+	solve();
+}
+
+
+CubEq::CubEq(double const a, double const b, double const c, double const d)
+{
+	this->a = a;
+	this->b = b;
+	this->c = c;
+	this->d = d;
+
+	Zmist();
+
+	compSQR();
+
+	computeN();
+
+	if (n != 0 || n != 255)
+	{
+		x = new double[n];
+	}
+
+	solve();
+}
+
+
+
+CubEq::~CubEq()
+{
+	delete[] x;
+	x = nullptr;
+}
+
+
+void CubEq::compSQR()
+{
+	Q = (b*b - 3*c)/9;
+	R = (2*b*b*b - 9*b*c + 27*d)/54;
+	S = Q * Q * Q - R * R;
+	//std::cout << S << std::endl;
+	//std::cout << Q << std::endl;
+	//std::cout << R << std::endl;
+}
+
+
+void CubEq::Zmist()
+{
+	if (a != 0)
+	{
+		b = b / a;
+		c = c / a;
+		d = d / a;
+		a = 1;
+	}
+}
+
+
+void CubEq::computeN()
+{
+	if (a != 0)
+	{
+		if (S >= 0)
+		{
+			n = 3;
+		}
+		else
+		{
+			n = 1;
+		}
+	}
+	else
+	{
+		SquareEq* sq = new SquareEq(b, c, d);
+		n = sq->GetN();
+
+	}
+}
+
+
+void CubEq::solve()
+{
+	//std::cout << "\n\tStart solve!" << std::endl;
+
+	if (a == 0)
+	{
+		if (b == 0)
+		{
+			LinearEq* linear = new LinearEq(c, d);
+
+			x[0] = linear->getX();
+			n = linear->getN();
+			//std::cout << "We are in cycle " << x[0];
+
+		}
+		else
+		{
+
+			SquareEq* sq = new SquareEq(b, c, d);
+
+			x = sq->GetX();
+		}
+	}
+	else
+	{
+		if (S > 0)
+		{
+			double fi;
+			//std::cout << "fi_under =  " << R / sqrt(Q * Q * Q) << std::endl;
+			//std::cout << "acos =  " << acos(-0.7638) << std::endl;
+			fi = acos(R / sqrt(Q * Q * Q))/3;
+			//std::cout << "fi =  " << fi << std::endl;
+			x[0] = -2 * sqrt(Q) * cos(fi) - b / 3;
+			//std::cout << "x[0] = " << x[0];
+			x[1] = -2 * sqrt(Q) * cos(fi - 2*M_PI/3) - b / 3;
+			x[2] = -2 * sqrt(Q) * cos(fi + 2*M_PI/3) - b / 3;
+		}
+		else if (S == 0)
+		{
+			//std::cout << "We are in cycle " << x[0];
+			x[0] = -2*cbrt(R) - b / 3;
+			x[1] = cbrt(R) - b / 3;
+			x[2] = cbrt(R) - b / 3;
+		}
+		else
+		{
+			//std::cout << "We are in cycle " << x[0];
+			if (Q > 0)
+			{
+				double fi;
+				fi = acosh(abs(R) / sqrt(Q * Q * Q)) / 3;
+				x[0] = -2 * R / abs(R) * sqrt(Q) * cosh(fi) - b / 3;
+			}
+			else if (Q < 0)
+			{
+				//std::cout << "We are in cycle " << x[0];
+				double fi;
+				fi = asinh(abs(R) / sqrt(abs(Q * Q * Q))) / 3;
+				x[0] = -2 * R / abs(R) * sqrt(abs(Q)) * sinh(fi) - b / 3;
+			}
+			else
+			{
+				x[0] = -cbrt(d - b * b * b / 27) - b / 3;
+			}
+		}
+	}
+}
+
+
+void CubEq::showX()
+{
+	if (n == 255)
+	{
+		std::cout << "\t\t-We have to many solves!" << std::endl;
+	}
+	else if (n == 0)
+	{
+		std::cout << "\t\t-We have no solves!" << std::endl;
+	}
+	else
+	{
+		std::cout << "\t\t-Our solves are:\n";
+		for (int i = 0; i < n; i++)
+		{
+			std::cout << "\t\t\tx[" << i << "] = " << x[i] << std::endl;
+		}
+	}
+}
+
+double* CubEq::GetX()
+{
+	return x;
+}
+
+
+void CubEq::inputCoef()
+{
+	std::cout << "\tPlease, input a = ?\b";
+	while (!(std::cin >> a))
+	{
+		std::cin.clear();
+
+		std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
+		std::cout << "\t\t-Invalid input. Try aganin: ";
+	}
+
+	std::cout << "\tPlease, input b = ?\b";
+	while (!(std::cin >> b))
+	{
+		std::cin.clear();
+
+		std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
+		std::cout << "\t\t-Invalid input. Try aganin: ";
+	}
+
+	std::cout << "\tPlease, input c = ?\b";
+	while (!(std::cin >> c))
+	{
+		std::cin.clear();
+
+		std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
+		std::cout << "\t\t-Invalid input. Try aganin: ";
+	}
+
+	std::cout << "\tPlease, input d = ?\b";
+	while (!(std::cin >> d))
+	{
+		std::cin.clear();
+
+		std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
+		std::cout << "\t\t-Invalid input. Try aganin: ";
+	}
+}

Equel/Equel/CubEq.h

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+#pragma once
+#include "Equation.h"
+#include "LinearEq.h"
+#include "SquareEq.h"
+#include <iostream>
+#include <cmath>
+#define _USE_MATH_DEFINES
+#include <math.h>
+
+class CubEq : public Equation
+{
+public:
+	CubEq();
+	CubEq(double const, double const, double const, double const);
+	~CubEq();
+
+	void showX() override;
+
+	double* GetX();
+
+private:
+	double a, b, c, d, S, Q, R;
+	void solve() override;
+	void computeN() override;
+	void inputCoef() override;
+	void compSQR();
+	void Zmist();
+
+};

Equel/Equel/CubEquation.cpp

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+#include "CubEquation.h"
+
+
+
+CubEquation::CubEquation()
+{
+}
+
+
+CubEquation::~CubEquation()
+{
+}

Equel/Equel/CubEquation.h

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+
+

Equel/Equel/Debug/Equel.log

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+  LinearEq.cpp
+  Source.cpp
+  SquareEq.cpp
+  Generating Code...
+  Equel.vcxproj -> c:\Users\Roman\source\repos\Equel\Debug\Equel.exe

Equel/Equel/Debug/Equel.tlog/Equel.lastbuildstate

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+#TargetFrameworkVersion=v4.0:PlatformToolSet=v141:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit:WindowsTargetPlatformVersion=10.0.16299.0
+Debug|Win32|c:\Users\Roman\source\repos\Equel\|

Equel/Equel/Equation.h

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+#pragma once
+#include <iostream>
+class Equation
+{
+public:
+	virtual void showX() = 0;
+	int getN() { return n; }
+
+protected:
+	int n;
+	double *x;
+
+	virtual void solve() = 0;
+	virtual void computeN() = 0;
+	virtual void inputCoef() = 0;
+};