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 JAVA (judge verdict: Accepted)

import java.util.Scanner; 
 public class Main {
   public static void main(String[] args) {
          Scanner sc = new Scanner(System.in);
       
            int a ;
            String op ;
            int b ;
       
            int sum=0;
       
            String tasu = "+" ;
            String hiku = "-" ;
            String kake = "*" ;
            String waru = "/" ;
            String end = "?" ;
       
       while(true){
           a = sc.nextInt();
           op = sc.next();
           b = sc.nextInt();
           if(op.equals(tasu)){
               sum=a+b;
               System.out.println(sum);
           }
           if(op.equals(hiku)){
               sum=a-b;
               System.out.println(sum);
           }
           if(op.equals(kake)){
               sum=a*b;
               System.out.println(sum);
           }
           if(op.equals(waru)){
               sum=a/b;
               System.out.println(sum);
           }
           if(op.equals(end)){
               break;
           }
       }
   }
 }