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)

def toi(a)
	b = []
	a.each do |n|
		b << n.to_i
	end
	b	
end

begin
a=gets().split
x = a[0].to_i
y = a[2].to_i
op = a[1]
case op
when "+" then
	z = x + y
	puts z
when "-" then
	z = x -y
	puts z
when "*" then
	z = x * y
	puts z
when "/" then
	z = x /y
	puts z
else
end
end while op != "?"