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++ (judge verdict: Time Limit Exceeded)

#include <iostream>
using namespace std;
int main()
{
    int a, b;
    char s;
    cin>>a>>s>>b;
    while(true)
    {
        if (s == '+')
            cout<<a + b<<endl;
        else
        {
            if (s == '-')
            cout<<a - b<<endl;
            else
            {
                if (s == '*')
                cout<<a*b<<endl;
                else
                {
                    if (s == '/')
                    cout<<a/b<<endl;
                    else
                        break;
                }
            }
        }
    }
    return 0;
}