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.io.*;
import java.util.*;

class Main {
    public static void main(String [] args){
        Scanner scan = new Scanner(System.in);
        
        while(true){
            int a   = scan.nextInt();
            char op = scan.next().charAt(0);
            int b   = scan.nextInt();
            
            if(op == '?'){
                break;
            }
            
            switch(op){
            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;
            }
        }
    }
}