Question: Print with variables

Hey everyone,

I'm using printf to print out the following:

printf("Absolute error = %.10f \nRelative error = %.10f", abs(fractionPart-binarySum), 100*abs(fractionPart-binarySum)/fractionPart)

however, it's tedious always having to edit the two occurrences of "10" decimal places. Is there a way to define a variable like decimals := 10 and then refer to it inside the quotation marks in printf?

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