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https://github.com/TheAlgorithms/Ruby
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105 lines
2.3 KiB
Ruby
105 lines
2.3 KiB
Ruby
# A ruby program for weight conversions
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module WeightConversion
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# Kilogram -> Gram = (kilogram_value * 1000) grams
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def self.kilogram_to_gram(kilogram_input)
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raise StandardError unless Integer === kilogram_input
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gram = kilogram_input * 1000
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"#{kilogram_input} kg = #{gram} g"
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end
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# Gram -> Kilogram = (gram_value / 1000) kilograms
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def self.gram_to_kilogram(gram_input)
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kilogram = gram_input / 1000
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"#{gram_input} g = #{kilogram} kg"
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end
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# Pound -> Ounce = (pound_value * 16) oz
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def self.pound_to_ounce(pound_input)
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ounce = pound_input * 16
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"#{pound_input} lb = #{ounce} oz"
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end
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# Ounce -> Pound = (ounce_value / 16) lb
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def self.ounce_to_pound(ounce_input)
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pound = ounce_input / 16
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"#{ounce_input} oz = #{pound} lb"
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end
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# Kilogram -> Pound = (kilogram_input * 2.205) lb
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def self.kilogram_to_pound(kilogram_input)
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pound = (kilogram_input * 2.205).round(2)
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"#{kilogram_input} kg = #{pound} lb"
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end
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# Pound -> Kilogram = (pound_input / 2.205) kg
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def self.pound_to_kilogram(pound_input)
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raise StandardError unless Integer === pound_input
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kilogram = (pound_input / 2.205).round(2)
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"#{pound_input} lb = #{kilogram} kg"
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end
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end
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#
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# Valid inputs
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#
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puts WeightConversion.kilogram_to_gram(2)
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# 2 kg = 2000 g
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puts WeightConversion.gram_to_kilogram(3000)
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# 3000 g = 3 kg
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puts WeightConversion.pound_to_ounce(16)
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# 16 lb = 256 oz
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puts WeightConversion.ounce_to_pound(16)
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# 16 oz = 1 lb
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puts WeightConversion.kilogram_to_pound(1)
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# 1 kg = 2.21 lb
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puts WeightConversion.pound_to_kilogram(100)
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# 100 lb = 45.35 kg
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#
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# Invalid inputs
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#
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begin
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puts WeightConversion.kilogram_to_gram("a")
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rescue StandardError
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puts "Error: Please provide number only!"
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end
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begin
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puts WeightConversion.kilogram_to_gram("3000")
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rescue StandardError
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puts "Error: Please provide number only!"
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end
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begin
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puts WeightConversion.kilogram_to_gram("16")
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rescue StandardError
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puts "Error: Please provide number only!"
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end
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begin
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puts WeightConversion.kilogram_to_gram("x ")
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rescue StandardError
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puts "Error: Please provide number only!"
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end
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begin
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puts WeightConversion.kilogram_to_gram("weight")
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rescue StandardError
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puts "Error: Please provide number only!"
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end
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begin
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puts WeightConversion.kilogram_to_gram("100")
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rescue StandardError
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puts "Error: Please provide number only!"
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end
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