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: Time Limit Exceeded)

import java.util.Scanner;

class Main{
   public void yatary() {  
     Scanner sc = new Scanner(System.in);
     int x;
     int a = sc.nextInt();
 String op = sc.next();
     int b = sc.nextInt();
       boolean sw = true;
       sc.useDelimiter("\\s");
       while(sw = true){
           if (op.equals("+")){
               x = a + b;
               System.out.println(x);
           }else if(op.equals("-")){
               x = a - b;
               System.out.println(x);
           }else if(op.equals("*")){
               x = a * b;
               System.out.println(x);
           }else if(op.equals("/")){
               x = a / b;    
               System.out.println(x);
        }
           sw = false;
     }
  }

public static void main(String[] args){ 
    new Main().yatary();   
  }
}