|STRCSPN(3)||Library Functions Manual||STRCSPN(3)|
char *s, const char
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).
strcspn() function returns the number of characters spanned.
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';
strcspn() function conforms to ANSI X3.159-1989 (“ANSI C89”).
strcspn() function first appeared in AT&T System III UNIX and was reimplemented for 4.3BSD-Tahoe.
|June 5, 2013||OpenBSD-current|