The srand function sets the starting value, seed, used by the pseudo-random number generator in the rand function. The random number generator produces the same sequence of pseudo-random numbers for any given value of seed.

None.

rand

#include <stdlib.h>
#include <stdio.h> /* for printf */

void tst_srand (void) {
  int i;
  int r;

  srand (56);

  for (i = 0; i < 10; i++) {
    printf ("I = %d, RAND = %d\n", i, rand ());
  }
}