Getting the number of decimal places

From Rosetta Code
Revision as of 14:47, 12 August 2020 by CalmoSoft (talk | contribs)
Getting the number of decimal places is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

Write a program (function) to get the number of decimals in a given number.

Examples:

for num = 12.345 decimals = 3 and for num = 12.3450 decimals = 4

Ring

<lang ring>

  1. Testing the function

decimals(2) # Unsensitive to the default setting of decimals n = 5.1945 ? NbrOfDecimals(n) # Gives 4

func NbrOfDecimals(n) nTemp = 1 nNbrOfDecimals = 0 while True if nNbrOfDecimals < 9 nNbrOfDecimals++ nTemp *= 10 nTemp1 = n * nTemp - ceil( n * nTemp ) if nTemp1 = 0 return nNbrOfDecimals ok else raise("Acceeding the maximum number of 9 decimals!") ok end </lang>

Output:
4