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.io.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

class Main {
    public static void main(String[] args) throws IOException {
       Scanner in = new Scanner(System.in);
       while(in.hasNextInt()) {
	       int a = in.nextInt();
	       char op = in.next().charAt(0);
	       int b = in.nextInt();

	       if(op=='?') return;

	       int ans = 0;
	       if(op == '+') {
		       ans=a+b;
	       } else if(op == '-') {
		       ans=a-b;
	       } else if(op == '*') {
		       ans=a*b;
	       } else if(op == '/') {
		       ans=a/b;
	       }
	       System.out.println(ans);
       }
    }
}