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 num1, num2;
    int ans;
    char enzanshi;


    while(1) {
        scanf("%d %c %d", &num1, &enzanshi, &num2);

        if(num1 == 0 && num2 == 0) {
            break;
        }

        if(enzanshi == '+') {
            ans = num1 + num2;
        } else if(enzanshi == '-') {
            ans = num1 - num2;        
        } else if(enzanshi == '*') {
            ans = num1 * num2;
        } else if(enzanshi == '/') {
            ans = num1 / num2;
        }

        printf("%d\n", ans);
    }
        return 0;
}