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.*;

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

            if(op == '?')break;

            switch (op){
                case '+':
                    res = a + b;
                    break;
                
                case '-':
                    res = a - b;
                    break;

                case '*':
                    res = a * b;
                    break;

                case '/':
                    res = a / b;
                    break;
            }

            System.out.println(res);
        }
    }
}