Query: strcspn
OS: freebsd
Section: 3
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STRSPN(3) BSD Library Functions Manual STRSPN(3)NAMEstrspn, strcspn -- span a stringLIBRARYStandard C Library (libc, -lc)SYNOPSIS#include <string.h> size_t strspn(const char *s, const char *charset); size_t strcspn(const char *s, const char *charset);DESCRIPTIONThe strspn() function spans the initial part of the null-terminated string s as long as the characters from s occur in the null-terminated string charset. In other words, it computes the string array index of the first character of s which is not in charset, else the index of the first null character. The strcspn() function spans the initial part of the null-terminated string s as long as the characters from s do not occur in the null-ter- minated string charset (it spans the complement of charset). In other words, it computes the string array index of the first character of s which is also in charset, else the index of the first null character.RETURN VALUESThe strspn() and strcspn() functions return the number of characters spanned.SEE ALSOmemchr(3), strchr(3), strpbrk(3), strrchr(3), strsep(3), strstr(3), strtok(3), wcsspn(3)STANDARDSThe strspn() and strcspn() functions conform to ISO/IEC 9899:1990 (``ISO C90'').BSDMay 24, 2014 BSD