Stack implementation using array

CPP/data-structures/stack.cpp

@@ -0,0 +1,41 @@
+/*Stack Implementation using Arrays in C++
+  created by DarkSun27*/
+
+#include <iostream>
+#define size 100
+using namespace std;
+
+int arr[size],tos=0;
+void push(int value)
+{
+	if(tos==size)
+	{
+		cout<<"Size of stack is full";
+		return;
+	}
+	arr[tos++]=value;
+}
+int pop()
+{
+	if(tos!=0)
+	{
+		return arr[--tos];
+	}
+	cout<<"Empty Stack";
+	return -1;
+}
+int main(){
+	int t; //defines number of times user wants to test stack
+	cin>>t;
+	for(int i=0;i<t;i++){
+		int opt=0;
+		cin>>opt;     // 1 for push and 2 for pop
+		switch(opt)
+		{
+			case 1:int value;cin>>value;push(value);break;
+			case 2:cout<<pop();break;
+			default:cout<<"Wrong Option";break;
+		}
+	}
+	return 0;
+}