#define N 100000

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

double random_num()
{
  return (double)rand()/(double)(RAND_MAX);
}


int main()
{
  int i, j, count, counter[100];

  for ( j=0; j<20 ; j++ )
    counter[j] = 0;

  for ( i=0; i<N ; i++ )
    {
      j = (int) ( 10.0 * random_num() );
      counter[j]++;
    }

  count = 0;
  for ( j=0; j<15 ; j++ )
    {
      printf( "%3d %d\n", j, counter[j] );
      count = count + counter[j];
    }
  printf( " Check - %d\n", count );
}