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 <stdio.h>

int main(void){
	int a, b;
	char op;
	int result;

	while(1){
		scanf("%d ", &a); op = getchar(); scanf(" %d", &b);
		
		if((a == 0 && op == '?') && b == 0){
			break;
		}

		switch(op){
			case '+':
				result = a + b;
				break;
		
			case '-':
				result = a - b;
				break;
	
			case '*':
				result = a * b;
				break;
	
			case '/':
				result = a / b;
				break;
	
			default :
				break;
		}

		printf("%d\n", result);
	}

	return 0;
}