Function to validate string for numeric with decimal point

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Function to validate string for numeric with decimal point

Moneo

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Posts: 1,956
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Joined: Jun 2003

#1

07-09-2003, 06:18 AM

Write a bulletproof function to validate a user input string that must be:
* Strictly numeric, unsigned, no leading/trailing/embedded blanks.
* But may contain a decimal point. The number of decimal places that the number can contain is a specification for the input field.
* Cannot be null, obviously.

Example: FUNCTION NUMDECIMAL (userinput$, numdecimals)
Where:
userinput$ is the string input by the user.
numdecimals is a value of 0 to n, where n is the maximum number of decimal places allowed for this field. Numdecimals may be zero.

The NUMDECIMAL function returns -1 if valid field, or 0 if invalid.

Remember that users are likely to input all kinds of garbage, including numbers with 2 decimal points, like 123.45.67

P.S. Your posted programs will be tested.
*****

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Messages In This Thread

Function to validate string for numeric with decimal point - by Moneo - 07-09-2003, 06:18 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-09-2003, 06:32 AM

Function to validate string for numeric with decimal point - by whitetiger0990 - 07-09-2003, 07:00 AM

Function to validate string for numeric with decimal point - by Moneo - 07-09-2003, 07:02 AM

Function to validate string for numeric with decimal point - by whitetiger0990 - 07-09-2003, 07:09 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-09-2003, 07:13 AM

Function to validate string for numeric with decimal point - by whitetiger0990 - 07-09-2003, 07:14 AM

Function to validate string for numeric with decimal point - by Moneo - 07-09-2003, 07:16 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-09-2003, 07:25 AM

Function to validate string for numeric with decimal point - by na_th_an - 07-09-2003, 07:27 AM

Function to validate string for numeric with decimal point - by whitetiger0990 - 07-09-2003, 07:29 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-09-2003, 07:30 AM

Function to validate string for numeric with decimal point - by Moneo - 07-09-2003, 07:31 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-09-2003, 07:34 AM

Function to validate string for numeric with decimal point - by whitetiger0990 - 07-09-2003, 07:37 AM

Function to validate string for numeric with decimal point - by Moneo - 07-09-2003, 07:41 AM

Function to validate string for numeric with decimal point - by Moneo - 07-09-2003, 07:48 AM

Function to validate string for numeric with decimal point - by na_th_an - 07-09-2003, 07:49 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-09-2003, 07:51 AM

Function to validate string for numeric with decimal point - by Moneo - 07-09-2003, 07:52 AM

Function to validate string for numeric with decimal point - by whitetiger0990 - 07-09-2003, 07:53 AM

Function to validate string for numeric with decimal point - by Moneo - 07-09-2003, 07:53 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-09-2003, 07:16 PM

To WhiteTiger, Nathan, Agamemnus: - by Moneo - 07-09-2003, 10:28 PM

Function to validate string for numeric with decimal point - by Agamemnus - 07-10-2003, 02:11 AM

Function to validate string for numeric with decimal point - by Moneo - 07-10-2003, 03:35 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-10-2003, 03:54 AM

Function to validate string for numeric with decimal point - by Moneo - 07-10-2003, 04:04 AM

Function to validate string for numeric with decimal point - by BinarySHOCK - 07-10-2003, 09:10 AM

Function to validate string for numeric with decimal point - by Moneo - 07-10-2003, 10:26 PM

Function to validate string for numeric with decimal point - by Agamemnus - 07-10-2003, 10:30 PM

Function to validate string for numeric with decimal point - by Moneo - 07-10-2003, 10:54 PM

Function to validate string for numeric with decimal point - by Agamemnus - 07-10-2003, 11:36 PM

Function to validate string for numeric with decimal point - by Moneo - 07-10-2003, 11:50 PM

Function to validate string for numeric with decimal point - by Agamemnus - 07-11-2003, 02:21 AM

Function to validate string for numeric with decimal point - by Moneo - 07-11-2003, 03:37 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-11-2003, 03:54 AM

Function to validate string for numeric with decimal point - by Moneo - 07-11-2003, 04:05 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-11-2003, 05:03 AM

Function to validate string for numeric with decimal point - by Moneo - 07-11-2003, 06:00 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-11-2003, 06:20 AM

Function to validate string for numeric with decimal point - by Moneo - 07-11-2003, 06:47 AM

ah, young one - by Agamemnus - 07-11-2003, 07:08 AM

Re: ah, young one - by oracle - 07-11-2003, 07:13 AM

Function to validate string for numeric with decimal point - by BinarySHOCK - 07-11-2003, 08:41 AM

Function to validate string for numeric with decimal point - by Moneo - 07-11-2003, 08:42 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-11-2003, 07:10 PM

Function to validate string for numeric with decimal point - by Mango - 07-12-2003, 12:38 AM

Function to validate string for numeric with decimal point - by oracle - 07-12-2003, 02:49 AM

Function to validate string for numeric with decimal point - by Moneo - 07-12-2003, 03:23 AM

well..... - by Agamemnus - 07-12-2003, 07:15 AM

Re: well..... - by Moneo - 07-13-2003, 04:59 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-13-2003, 07:12 AM

Function to validate string for numeric with decimal point - by Moneo - 07-13-2003, 07:17 AM

programming help - by Agamemnus - 07-13-2003, 04:47 PM

Function to validate string for numeric with decimal point - by Moneo - 07-15-2003, 02:54 AM

Function to validate string for numeric with decimal point - by Agamemnus - 07-15-2003, 05:12 PM

Function to validate string for numeric with decimal point - by Moneo - 07-15-2003, 11:14 PM

Function to validate string for numeric with decimal point - by Agamemnus - 07-15-2003, 11:30 PM

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