isdigit
- Updated2023-02-21
- 1 minute(s) read
isdigit
int isdigit (int testCharacter);
Purpose
Tests to see if a character is a decimal digit (0-9). The input to this function must be a character with integer value between 0 and 255.
Parameters
| Input | ||
| Name | Type | Description |
| testCharacter | int | Contains the character to be tested. The input must be a character with integer value between 0 and 255. |
Return Value
| Name | Type | Description |
| testResult | int | Contains the returned result of the test. The function returns a nonzero (true) integer value if the character being tested is a decimal digit (0-9). |
Additional Information
Library: ANSI C Library
Include file: ansi_c.h
LabWindows/CVI compatibility: LabWindows/CVI 3.0 and later
Example
Refer to userint\keyfiltr.cws for an example of using the isdigit function.