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);
        while(true) {
            int a = sc.nextInt();
            String b  = sc.next();
            int c = sc.nextInt();
            int f=0;
            switch (b) {
    		case "+":
    			System.out.println(a+c);
    			break;
    		case "-":
    			System.out.println(a-c);
    			break;
    		case "*":
    			System.out.println(a*c);
    			break;
    		case "/":
    			System.out.println(a/c);
    			break;
    		default:
    			f=1;
    			break;
            }
            if(f==1)break;
        }
        sc.close();
    }
}