c - get pointer of functions for use on other fuctions -

c - get pointer of functions for use on other fuctions -

i need help

i want homecoming string in function , utilize on do this?

char *randstring() { int n = (0 + rand() % ( 4 - 0 )); char cadena[5][100] ={ {"duck"}, {"taxi"}, {"hola mundo!"}, {"paris"}, {"lexugon"} }; homecoming cadena[n] ; }

and want on main function , send function user...

int main (){ srand(time(null)); int contador = 0; /*while ( contador < 100 ){ char* ptr = randstring(); printf ( "%s\n", ptr ); contador++; }*/ char *ptr=randstring(); compare( ptr ); getchar(); homecoming 0; }

you cannot homecoming string comes local array in automatic storage, if declared array static and/or moved declaration outer scope:

static char cadena[5][100] ={ {"duck"}, {"taxi"}, {"hola mundo!"}, {"paris"}, {"lexugon"} }; char *randstring() { homecoming cadena[rand() % 5] ; }

you not allowed reference variables in automatic storage area when go out of scope; undefined behavior. objects in static storage remain valid.

declaring cadena static in outer scope ensures name remain "invisible" other translation units, ensuring declaration of cadena in different c file not create name collision.

c function pointers