C++ Using Calculator Using Function

#include

#include

#include

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);

}

}