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: WA: Presentation Error)

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
    	int a = scan.nextInt();
    	String op = scan.next();
    	int b = scan.nextInt();

    	
    	if(op.equals("+")){
    	System.out.printf("%d",a+b);
    		}
    	else if(op.equals("-")){
        	System.out.printf("%d",a-b);
        	}
    	else if(op.equals("^")){
        	System.out.printf("%d",a*b);
        	}
    	else if(op.equals("/")){
        	System.out.printf("%d",a/b);
        	}
//    	else if(op.equals("?")){
//        	}
    }
}