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puts 'Enter x and y'
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x=gets.to_i # to check errors, use x=Integer(gets)
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y=gets.to_i
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puts "Sum: #{x+y}",
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"Difference: #{x-y}",
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"Product: #{x*y}",
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"Quotient: #{x/y}", # truncates towards negative infinity
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"Remainder: #{x%y}", # same sign as second operand
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"Exponentiation: #{x**y}"
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