strstr(3) — Subroutines
NAME
strstr − Finds a substring
LIBRARY
Standard C Library (libc.a)
SYNOPSIS
#include <string.h> char ∗strstr(
const char ∗s1,
const char ∗s2);
PARAMETERS
s1Specifies the character string being searched.
s2Specifies the substring to be located.
DESCRIPTION
The strstr() function locates the first occurrence in the string pointed to by the s1 parameter of the sequence of bytes in the string pointed to by the s2 parameter, excluding the terminating null character.
NOTES
AES Support Level:
Full use.
RETURN VALUES
Upon successful completion, the strstr() function returns a pointer to the located string or a null pointer when the string is not found. When the s2 parameter points to a string having 0 (zero) length, the strstr() function returns the string pointed to by parameter s1. Upon error, a null pointer is returned, and errno is set to indicate the error.