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# File 'lib/gemacalc.rb', line 2
def self.operation
puts "Entre operator ( +|-|*|/ )"
operation = gets.chomp()
puts "Entre first number"
num1 = gets.chomp().to_i
puts "Entre second number"
num2 = gets.chomp().to_i
if num1.is_a?(Integer) && num2.is_a?(Integer)
case operation
when "+"
puts(num1 + num2)
when "-"
puts(num1 - num2)
when "*"
puts(num1 * num2)
when "/"
puts(num1/num2)
else
puts 'Invalid operation, bye'
end
else
puts 'Invalid numbers, bye'
end
end
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