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;
 
class Main {
    Scanner sc = new Scanner(System.in);
 
    public void run() {
        while (true) {
            int a = sc.nextInt();
            String op = sc.next();
            int b = sc.nextInt();
            if ("+".equals(op)) {
                ln(a + b);
            } else if ("-".equals(op)) {
                ln(a - b);
            } else if ("*".equals(op)) {
                ln(a * b);
            } else if ("/".equals(op)) {
                ln(a / b);
            } else {
                break;
            }
        }
    }
 
    public static void main(String[] args) {
        new Main().run();
    }
 
    public static void pr(Object o) {
        System.out.print(o);
    }
 
    public static void ln(Object o) {
        System.out.println(o);
    }
 
    public static void ln() {
        System.out.println();
    }
}