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;
	
	while( 1 )
	{
		scanf( "%d %c %d", &a, &op, &b );
		
		if( op == "?" )
		{
			break;
		}
		else
		{
			if( op == "+" )
			{
				printf( "%d\n", a + b );
			}
			else
			if( op == "-" )
			{
				printf( "%d\n", a - b );
			}
			else
			if( op == "*" )
			{
				printf( "%d\n", a * b );
			}
			else
			if( op == "/" )
			{
				printf( "%d\n", a / b );
			}
		}
	}

	return 0;
}