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