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)

# coding: utf-8
# coding: Shift_JIS
# coding: EUC-JP
# coding: cp932
import math
while 1:
    a,b,c = map(str,input().split())
    a = int(a)
    c = int(c)
    ans = 0
    if b == "?":
        break
    if b == "+":
        ans = a + c
    if b == "-":
        ans = a - c
    if b == "/":
        ans = int(a / c)
    if b == "*":
        ans = a * c
    print(ans)