#include <stdio.h>

#define IN 1  /* inside a word */ 
#define OUT 0 /* outside a word */

#define LARGEST 10 /* The largest word we keep track of */

/**
 * histowords - Generate a histogram of word lengths, more or less.
 *
 * To do: 
 *   Make it a visual histogram, rather than a numeric histogram.
 *   Deal with the last word in the input when EOF falls after it.
 *   Deal with words of length greater than LARGEST.
 *   Improve the output.
 */
int
main() {
  int c;      // The next input character
  int state;  // Are we in or out of a word.
  int len;    // The length of the current word
  int lengths[LARGEST+1] = { 0 };
  int i,j;    // Traditional counter variables for loops

  len = 0;
  state = OUT; 

  while ((c = getchar()) != EOF) 
    {
      if (c == ' ' || c == '\n' || c == '\t')
        {
          if (state == IN) 
            {
              lengths[len]++;
            }
          state = OUT;
          len = 0;
        } // if (c is whitespace) 
      else if (state == OUT) 
        {
          state = IN; 
          len = 1;
        }  // if (state == OUT)
      else
        {
          ++len;
        } // in a word
    } // while

  printf ("Len  Num  Pictoral\n");
  for (i = 1; i < LARGEST+1; i++)
    {
      printf ("%2d: %3d: ", i, lengths[i]);
      for (j = 0; j < lengths[i]; j++)
        printf ("*");
      printf ("\n");
    } // for each length

  return 0;
} // main