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>
#include <math.h>


int main(void) {

	// 1_4-C Simple Calculator

	int a,b;
	char op;
	int ans;
	
	scanf("%d %c %d",&a,&op,&b);
	
	while(op!="?"){
		if(op=="+"){
			ans = a+b; 
		}else if(op=="-"){
			ans = a-b;
		}else if(op=="*"){
			ans = a*b;
		}else if(op=="/"){	
			ans = a/b;
		}
		printf("%d",ans);
		scanf("%d %c %d",&a,&op,&b);
	}
        return 0;
}