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)

lines = []
while line = gets
  lines << line.chomp.split(' ')
end

results = []

lines.each do |l|
  case l[1]
  when "+"
    results.push(l[0].to_i + l[2].to_i)
  when "-"
    results.push(l[0].to_i - l[2].to_i)
  when "*"
    results.push(l[0].to_i * l[2].to_i)
  when "/"
    results.push(l[0].to_i / l[2].to_i)
  end
end

results.each do |r|
  puts r
end