STRCHR(3) | Library Functions Manual | STRCHR(3)

# NAME

strchr, strchrnul — locate character in string

# LIBRARY

Standard C Library (libc, -lc)

# SYNOPSIS

#include <string.h>
char *
strchr(const char *s, int c);
char *
strchrnul(const char *s, int c);

# DESCRIPTION

The strchr() and strchrnul() functions locate the first occurrence of c in the string pointed to by s. The terminating `NUL` character is considered part of the string. If c is ‘`\0`’, strchr() and strchrnul() locate the terminating ‘`\0`’.

# RETURN VALUES

The function strchr() returns a pointer to the located character, or `NULL` if the character does not appear in the string. The function strchrnul() returns a pointer to the located character, or the a pointer to the `NUL` terminating character of the string if the character does not appear in the string.

# EXAMPLES

After the following call to strchr(), p will point to the string “oobar”:

    char *p;
    char *s = "foobar";

    p = strchr(s, 'o');

# SEE ALSO

index(3), memchr(3), rindex(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3)

# STANDARDS

The strchr() function conforms to ANSI X3.159-1989 (“ANSI C89”). strchrnul() function appeared in NetBSD 8.

October 12, 2016 | NetBSD 8.2