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,c,d;
  char b;

  scanf("%d",&a);
  scanf("%f",&b);
  scanf("%d",&c);

  while(1){
    switch(b){
      case '+':
        printf("%d\n",a + c);

      case '-':
        printf("%d\n",a - c);

      case '*':
        printf("%d\n",a * c);

      case '/':
        printf("%d\n",a / c);

      case '?':
        break;
        break;
    }
  }
  return 0;
}