#include <stdio.h>
#include <stdlib.h>

void main(void)
{ srandomdev();
  printf("10 random 1-digit numbers:\n    ");
  for (int i=0; i<10; i+=1)
    printf(" %d", random()%10);
  printf("\n100 tosses of a fair coin:\n");
  for (int i=0; i<10; i+=1)
  { printf("  ");
    for (int i=0; i<10; i+=1)
      if (random()%2==0)
        printf(" heads");
      else
        printf(" tails");
    printf("\n"); } }