Create Simple Calculator using C++ Programming language

 Simple Calculator using C++ Programming language:

Source code :

 Input :  
 #include<iostream>  
 #include<string>  
 using namespace std;  
 int main()  
 {  
      double a1 , b1 , c1 ;  
      char op;  
      cout <<"Enter first integer :";  
      cin >>a1;  
      cout <<"What do you want to do (+,-,*,/), Please enter :";  
      cin >>op;  
      cout <<"Enter the second integer :";  
      cin >>b1;  
      switch(op){  
           case '+':  
                c1=a1+b1;  
                cout<<"Sum of two integer :"<<c1;  
                break;  
           case '-':  
                c1=a1-b1;  
                cout<<"Subtraction of twoo number :"<<c1;  
                break;  
           case '*':  
                c1=a1*b1;  
                cout<<"Multiplication of two number :"<<c1;  
                break;  
           case '/':  
                c1=a1/b1;  
                cout<<"Division of two number :"<<c1;  
                break;  
           default :  
                cout<<"Syntax error.";  
      }  
      return 0;  
 }  

Output :

 Enter first integer :50  
 What do you want to do (+,-,*,/), Please enter :+  
 Enter the second integer :30  
 Sum of two integer :80  
 --------------------------------  
 Process exited after 18.86 seconds with return value 0  
 Press any key to continue . . .