#include #include int main (void) { char haystack1[20] = "TutorialsPoint"; char needle1[10] = "Point"; char *ret1; ret1 = strstr(haystack1, needle1); printf("The substring is: %s\n", ret1); printf("\n"); char haystack2[20] = "TutorialsPoint"; char needle2[10] = "Point"; char *ret2; ret2 = ft_strstr(haystack2, needle2); printf("The substring is: %s\n", ret2); return(0); }