명품 C++ Programming 실습문제 2장 13번

#include <iostream>
using namespace std;
 
int main() {
    int a, b;
    char op;
    while (1) {
        cout << "? ";
        cin >> a >> op >> b;
        switch (op) {
        case '+':cout << a << " " << op << " " << b << " = " << a + b << endl; break;
        case '-':cout << a << " " << op << " " << b << " = " << a - b << endl; break;
        case '*':cout << a << " " << op << " " << b << " = " << a * b << endl; break;
        case '/':cout << a << " " << op << " " << b << " = " << a / b << endl; break;
        case '%':cout << a << " " << op << " " << b << " = " << a % b << endl; break;
        default:cout << "잘못된 연산자 입니다." << endl;
        }
    }
}