How to compute the number of digits of a number ?

Sure, here are the steps to compute the number of digits of a number:

1. Convert the number into a string using the str() function. This will allow us to treat the number as a sequence of characters.

2. Use the len() function to count the number of characters in the string. This will give us the number of digits.

Here is an example in Python:

number = 12345
number_as_string = str(number)
number_of_digits = len(number_as_string)
print(number_of_digits)

This will output: 5

Please note that this method will not work correctly with decimal numbers or numbers with a sign (+ or -). For these cases, you would need to add additional steps to remove the decimal point or the sign before counting the digits.