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)

arr=Array.new
while str = STDIN.gets
        op1,op2,op3=str.chomp.split.map{|v|v.to_s}
        break if op2 == '?'
        op1=op1.to_i
        op3=op3.to_i
        case op2
        when '+' then
                arr.push(op1+op3)
        when '-' then
                arr.push(op1-op3)
        when '/' then
                arr.push(op1/op3)
        when '*' then
                arr.push(op1*op3)
        end
end
arr.each do | answer |
        puts answer
end