C Programming Code Examples C > Code Snippets Code Examples Returns a pointer to the first occurrence of str2 in str1 Returns a pointer to the first occurrence of str2 in str1 or a null pointer if there str2 is not part of str1 //Declaration: char *strstr(const char *str1, const char *str2); //Return: It returns a null pointer if no match is found. #include <string.h> #include <stdio.h> int main(void) { char *p; p = strstr("I Love Clementine", "hey"); printf(p); return 0; }