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){
     Scanner scanner = new Scanner(System.in);
     for(int i=1;i>0; i++){
          String c0 ="?";
          String c1 ="+";
          String c2 ="-";
          String c3 ="*";
          String c4 ="/";
          int a = scanner.nextInt();
          String op = scanner.next();
          int b = scanner.nextInt();
          if(op.equals(c0))break;
          if(op.equals(c1)){
              int e1=a+b;
              System.out.println(e1);
          }
          else if(op.equals(c2)){
              int e2=a-b;
              System.out.println(e2);
          }
          else if(op.equals(c3)){
              int e3=a*b;
              System.out.println(e3);
          }
          else if(op.equals(c4)){
              int e4=a/b;
              System.out.println(e4);
          }
     }     
}
}