题目描述
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.
Constraints
- 0 ≤ a, b ≤ 20000
- No divisions by zero are given.
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.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108
输入格式
见题面
输出格式
见题面
样例输入
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
样例输出
3
38
26
10
108