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 C++14 (judge verdict: Time Limit Exceeded)

#include<iostream>
using namespace std;
int main(){
	int a,op,b;
	while(1){
        cin>>a>>op>>b;
		if(op=='?')break;
	    else if(op=='+')cout<<a+b<<endl;
	    else if(op=='-')cout<<a-b<<endl;
	    else if(op=='*')cout<<a*b<<endl;
	    else if(op=='/')cout<<a/b<<endl;
	}
}