명품 C++ 실습문제 2장 15번

#include <iostream>
#include <istream>
using namespace std;

int main(){
    //5칙연산 하는 프로그램 짜기
	//atoi 함수유의
	int num1, num2,result;
	char cal;
	char numcal[100];
	while (1)
	{
		cout << "?";
		cin >> num1 >> cal >> num2;

		if (cal == '+') {
			result = num1 + num2;
			cout << num1 << cal << num2<<" = " << result<<endl;
		}
		else if (cal == '-') {
			result = num1 - num2;
			cout << num1 << cal << num2 << " = " << result<<endl;
		}
		else if (cal == '*') {
			result = num1 * num2;
			cout << num1 << cal << num2 << " = " << result<<endl;
		}
		else if (cal == '/') {
			result = num1 / num2;
			cout << num1 << cal << num2 << " = " << result<<endl;
		}
		else if (cal == '%') {
			result = num1 % num2;
			cout << num1 << cal << num2 << " = " << result<<endl;
		}
	

	}
	return 0;
}