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 in = new Scanner(System.in);

	int a,b;
	String op;
	
	int s = 0;
	while (true){
		a  = in.nextInt();
		op  = in.next();
		b  = in.nextInt();
		if (op.equals("?")){
			break;
		}else if (op.equals("+")){
			s = a + b;
		}else if (op.equals("-")){
			s = a - b;
		}else if (op.equals("*")){
			s = a * b;
		}else if (op.equals("/")){
			s = a / b;
		}
		System.out.println(s);
	}	
    }   
}