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: Wrong Answer)

import java.util.Scanner;

public class Main{
  public static void main(String[] args){
    Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    char x = scanner.next().charAt(0);
    int b = scanner.nextInt();

    switch(x){

    case '+':
      System.out.println(a + b);
      break;
    case '-':
      System.out.println(a - b);
      break;
    case '*':
      System.out.println(a * b);
      break;
    case '/':
      System.out.println(a / b);
      break;
    case '?':
      break;
    default:
      break;
    }
  }
}