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: Time Limit Exceeded)

import java.util.Scanner;
 
class Main{
  public static void main(String[] args){
    Scanner obj = new Scanner(System.in);
    int a = obj.nextInt();
    char op = obj.next().charAt(0);
    int b = obj.nextInt();
    
    do{
      if(op == '+'){
        System.out.println(a + b);}
      else if(op == '-'){
        System.out.println(a - b);}
      else if(op == '*'){
        System.out.println(a * b);}
      else if(op == '/'){
        System.out.println(a / b);}
      else{;}
    }while(op != '?');
  }
}