strspn
span a string
INTERFACE
#include <string.h>
size_t strspn ( const char *s, const char *charset )DESCRIPTION
The strspn function spans the initial part of the null-terminated string \c s as long as the characters from \c s occur in string \c charset.
Example 1
Workings
\code #include <stdio.h> #include <string.h> int main() { char s[20] = "0123456abcde", t[11] = "0123456789"; printf("The position of the first non-digit in s is: %d.
", strspn(s, t)); return 0; } \endcode
Solution
Output:
The position of the first non-digit in s is: 7.RETURN VALUES
The strspn function returns the number of characters spanned.
SEE ALSO
memchr, strchr, strcspn, strpbrk, strrchr, strstr, strtok
STANDARDS
The strspn function conforms to ISO/IEC 9899:1990 ("ISO C90").