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 void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a;
		String op = "";
		int b;
		int ans = 0;
		A: while(true) {
			a= sc.nextInt();
			op= sc.next();
			b= sc.nextInt();
			switch(op){
				case "+":
					ans = a + b;
					break;
				case "-":
					ans = a - b;
					break;
				case "*":
					ans = a * b;
					break;
				case "/":
					ans = a / b;
					break;
				case "?":
					break A;
			}
			System.out.println(ans);
		}
		sc.close();
	}
}