Commatizing numbers: Difference between revisions

''Commatizing''   numbers (as used here, a handy expedient made-up word) is the act of adding commas to a number (or string), or the numeric part of a larger string.

 

 

Write a function that takes a string as an argument with optional arguments or parameters (the format of parameters/options is left to the programmer) that in general, adds commas (or some

other characters, including blanks or tabs) to the first numeric part of a string (if it's suitable for commatizing as per the rules below), and returns that newly commatized string.

::::*   ±25000 motes.

 

The string may possibly ''not'' have a number suitable for commatizing, so it should be untouched and ''no error generated''.

 

::*   the case (upper/lower) of the exponent indicator, e.g.:   4.8903d-002

 

Any exponent character(s) should be supported:

::::::*   1247e12

::::::*   10000pow(pi)

 

 

The character(s) to be used for the comma can be specified, and may contain blanks, tabs, and other whitespace characters, as well as multiple characters. &nbsp; The default is the comma (<big>''','''</big>) character.

 

The character strings below may be placed in a file (and read) or stored as simple strings within the program.

;Strings to be used as a minimum:

The value of &nbsp; pi &nbsp; should be separated with blanks every 5 places past the decimal point,

:* &nbsp; 6/9/1946 was a good year for some.

<br>where the penultimate string has three leading blanks &nbsp; (real blanks are to be used).

 

;Also see: