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 Ruby (judge verdict: Accepted)

a = [0]
until a[1] == "?" do
    a = gets.split
	a[0] = a[0].to_i
	a[2] = a[2].to_i
	break if a[1] == "?"
    case a[1]
    when "+" then
        ans = a[0] + a[2]
    when "-" then
        ans = a[0] - a[2]
    when "*" then
        ans = a[0] * a[2]
    when "/" then
        ans = a[0] / a[2]
    end
	puts ans
end