STRSTR

STRSTR

NAME SYNOPSIS DESCRIPTION RETURN VALUE BUGS SEE ALSO

NAME

strstr - locate a substring

SYNOPSIS

#include haystack, const char *needle);

DESCRIPTION

The strstr() function finds the first occurrence of the substring needle in the string haystack. The terminating `0' characters are not compared.

RETURN VALUE

The strstr() function returns a pointer to the beginning of the substring, or NULL if the substring is not found.

BUGS

Early versions of Linux libc (like 4.5.26) would not allow an empty argument. Later versions (like 4.6.27) work correctly, and return haystack when needle is empty.

SEE ALSO

index(3), memchr(3), rindex(3), strchr(3), strpbrk(3), strsep(3), strspn(3), strtok(3)