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 calcs(a, op, c)
	if (op == '+')
		return a + c
	elsif (op == '-')
		return a - c
	elsif (op == '*')
		return a * c
	elsif (op == '/')
		return a / c
	end
end

input_arr = []
while input = gets.chomp
	a, op, c = input.split(' ')
	break if (op == '?')
	a_i = a.to_i
	c_i = c.to_i
	input_arr << [a_i, op, c_i]
end



input_arr.each{|i|
	a = []
	i.each{|j|
		a << j
	}
	puts calcs(a[0], a[1], a[2])
}