Problem:
Simple Calculator

Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.

The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.

Input

The input consists of multiple datasets. Each dataset is given in the following format.

a op b

The input ends with a dataset where op = '?'. Your program should not process for this dataset.

Output

For each dataset, print the value in a line.

Constraints

0 ≤ a, b ≤ 20000

No divisions by zero are given.

Sample Input 1

1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0

Sample Output 1

3
38
26
10
108

Solution in C++ (judge verdict: Time Limit Exceeded)

#include <iostream>
using namespace std;

int main(){
	int a,b;
	char op;
	while(1){
		cin >> a >> op >> b;
		switch(op){
			case '?':
				break;
			case '+':
				a +=b;
				cout << a <<"\n";
				break;
			case '-':
				a -=b;
				cout << a <<"\n";
				break;
			case '/':
				a /=b;
				cout << a <<"\n";
				break;
			case '*':
				a *=b;
				cout << a <<"\n";
				break;
		}
	}
	return 0;
	

}