ch01/ex01-13.c

   1 #!/usr/bin/tcc -run
   2 #include <stdio.h>
   3
   4 #define MAXLENGTH 16 /* It is very rare for a word to be so long. */
   5 #define IN         1
   6 #define OUT        0
   7
   8 int
   9 main() {
  10         int c, i, length, state;
  11         int nlength[MAXLENGTH]; /* nlength[0] is for words of length 1. */
  12
  13         for (i = 0; i < MAXLENGTH; ++(i))
  14                 nlength[i] = 0;
  15
  16         state  = OUT;
  17         length = 0;
  18         while ((c = getchar()) != EOF) {
  19                 if (!((c >= '0' && c <= '9')
  20                     || (c >= 'a' && c <= 'z')
  21                     || (c >= 'A' && c <= 'Z'))) {
  22                         if (state == IN) {
  23                                 state = OUT;
  24                                 if (length > 0) {
  25                                         ++(nlength[length-1]);
  26                                         length = 0;
  27                                 }
  28                         } /* else, noop */
  29                 } else {
  30                         if (length < MAXLENGTH)
  31                                 ++(length);
  32                         if (state == OUT)
  33                                 state = IN;
  34                 }
  35         }
  36
  37         for (i = 0; i < MAXLENGTH; ++(i)) {
  38                 printf("%2d ", i+1);
  39                 for (c = 0; c < nlength[i]; ++(c))
  40                         putchar('*');
  41                 putchar('\n');
  42         }
  43
  44         return 0;
  45 }