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: Wrong Answer)

import java.io.*;

class Main{
	static public void main (String args[]) throws IOException{
		BufferedReader buf = new BufferedReader(new InputStreamReader(System.in));
		//StringBuilder sb = new StringBuilder();

		while(true){
			String[] s;
			s = buf.readLine().split(" ");	
			int a = Integer.parseInt(s[0]);
			int b = Integer.parseInt(s[2]);

			if(s[1].equals("+"))
				System.out.println(a+b);
			else if(s[1].equals("-"))
				System.out.println(a-b);
			else if(s[1].equals("*"))
				System.out.println(a*b);
			else if(s[1].equals("/"))
				System.out.println((float)a/b);
			else if(s[1].equals("?"))
				break;
			else 
				break;
		}
		

	}
}