// Program which performs addition, subtraction, multiplication and subtraction.
#include <iostream>
using namespace std;
// input function
void Input (float &x, float &y);
float a=1.0, b=1.0, result;
char operation;
int main ()
{
cout << "Program which performs addition, subtraction, multiplication and subtraction. \n\n";
cout << "Please input calculation operation (eg. 1 + 2): \n";
cin >> a >> operation >> b;
Input (a,b);
cout << "The answer is: " << result << endl;
system ("pause");
return 0;
}
void Input (float &x, float &y)
{
a = x;
b = y;
switch (operation)
{
case '+':
result = x + y;
break;
case '-':
result = x - y;
break;
case '*':
result = x * y;
break;
case '/':
result = x / y;
break;
default:
cout << "Improper operation. Please input a correct calculation operation: \n";
cin >> a >> operation >> b;
Input (a, b);
}
}
