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.Scanner;

public class Main{

    public static int Calculate(int a,String op,int b){
        int result = 0;
        switch(op){
            case "+":
                result = a + b;
                break;
            
            case "-":
                result = a - b;
                break;
            
            case "*":
                result = a * b;
                break;

            case "/":
                result = a / b;
                break;
        }
        return result;
    }
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        String op = sc.next();
        int b = sc.nextInt();
        while(op.equals("?") == false){
            System.out.println(Calculate(a,op,b));
            a = sc.nextInt();
            op = sc.next();
            b = sc.nextInt();
        }
        //sc.close();
    }
}