C string strspn() function
Example
Measure the length of the string up to the first non-digit:
char myStr[] = "4096 bytes should be enough";
int pos = strspn(myStr, "0123456789");
printf("%d", pos);Definition and Usage
The strspn() function searches for the first character in a string which
does not match any of the specified characters and returns the length of the string up to that point.
The strspn() function is defined in the <string.h> header file.
Syntax
strspn(void * str, void * search);Parameter Values
| Parameter | Description |
|---|---|
| str | Required. The string to search in. |
| search | Required. A string containing a set of characters to search for. |
Technical Details
| Returns: | An integer indicating the position of the first character which does not match any of the search characters. |
|---|