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"Actual number type" instead of "Real number type"
The example code converts the input into a whole number. Replace the text "convert the String the program reads as input into a real number type" to "an actual number type" as the word real might be understood as one of the number categories instead as a synonym to "actual".
I see what you mean; I think this would be even better if it said "a number type" (no "real" or "actual"). Could you make that change please?