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 Python3 (judge verdict: Accepted)

# encoding:utf-8

while True:
    a,op,b = map(str, input().split())
    c = int(a)
    d = int(b)
    if op == '+': result = c + d
    if op == '-': result = c - d
    if op == '*': result = c * d
    if op == '/': result = int(c / d)
    if op == '?': break
    print("{0}".format(result))