Is it possible to peek at the next rand value

Assuming the generator has been seeded, it is possible to peek at the next random value without changing it?

i.e. given:

#include <stdlib.h>

int r;
r = rand(); // say this is 99
r = rand(); // say this is 80

Is this possible

#include <stdlib.h>

int r;
r = peekAtRand(); // this will give 99
r = rand(); // but this still gives 99

r = peekAtRand(); // this will give 80
r = rand(); // but this still gives 80

Furthermore, can this be extended to peeking at the next n numbers?