Answer to Question #325679 in C++ for SAMO

Question

Write a program that mimics a calculator. The program should take as input two integers and the operation

to be performed.

It should then output the numbers, the operator, and the result. (For division, if the denominator is zero,

output an appropriate message.)

Some sample outputs are as follow:

3 + 4 = 7

13 * 5 = 65

Answer 1

#include <iostream>
using namespace std;


int main() {
    double x, y, z;
    char op;


    cout << "Enter the first number: ";
    cin >> x;
    cout << "Enter the second number: ";
    cin >> y;
    cout << "Enter an operator: ";
    cin >> op;


    switch (op) {
        case '+':
            z = x + y;
            break;
        case '-':
            z = x - y;
            break;
        case '*':
            z = x * y;
            break;
        case '/':
            if (y == 0) {
                cout << "Denominator is zero";
                return 1;
            }
            z = x / y;
            break;
        default:
            cout << "Unknown operator";
            return 1;
    }
    cout << x << ' ' << op << ' ' << y << " = " << z << endl;
    return 0;
}