STRCSPN(3) OpenBSD Programmer's Manual STRCSPN(3)NAMEstrcspn - span the complement of a string
SYNOPSIS
#include <string.h>
size_t
strcspn(const char *s, const char *charset);
DESCRIPTION
The strcspn() function spans the initial part of the NUL-terminated
string s as long as the characters from s do not occur in string charset
(it spans the complement of charset).
RETURN VALUES
The strcspn() function returns the number of characters spanned.
EXAMPLES
The following call to strcspn() will return 3, since the first three
characters of string s do not occur in string charset:
char *s = "foobar";
char *charset = "bar";
size_t span;
span = strcspn(s, charset);
The following removes the first (if any) newline character from string
line. This is useful for trimming the newline after a fgets(3) call.
char line[BUFSIZ];
if (fgets(line, sizeof(line), fp) != NULL)
line[strcspn(line, "\n")] = '\0';
SEE ALSOmemchr(3), strchr(3), strpbrk(3), strrchr(3), strsep(3), strspn(3),
strstr(3), strtok(3)STANDARDS
The strcspn() function conforms to ANSI X3.159-1989 (``ANSI C'').
OpenBSD 4.9 August 8, 2007 OpenBSD 4.9