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.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

class Main{

	public static void main(String[] args) throws IOException{

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringBuilder sb = new StringBuilder();

		while(true){

			String[] token = br.readLine().split(" ");
			int a = Integer.parseInt(token[0]);
			char op = token[1].charAt(0);
			int b = Integer.parseInt(token[2]);

			if(op == '?'){
				break;
			}

			if(op == '+'){
				sb.append((a + b) + "\n");
			}else if(op == '-'){
				sb.append((a - b) + "\n");
			}else if(op == '*'){
				sb.append((a * b) + "\n");
			}else if(op == '/'){
				sb.append((a / b) + "\n");
			}

		}

		System.out.print(sb);

	}
}