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