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() {
	int a, b,A;
	char op;
	scanf("%d\n", &a);
	scanf("%c\n", &op);
	scanf("%d\n", &b);
	for (;;) {
		if (op == '?')break;
		switch (op)
		{
		case '+':
			A=a+b;
			break;
		case '*':
			A = a * b;
			break;
		case '-':
			A = a - b;
			break;
		case '/':
			A = a / b;
			break;
		}}
	printf("%d\n", A);
	return 0;
}