lenhist.c

   1 #include <stdio.h>
   2
   3 /* exercise 1-13: create a histogram of the length of words in the input */
   4 /* count the lengths of the words w/ an iterator
   5 upon reading whitespace, increment the value saved at an array index equal to the iterator's value
   6 reset iterator to 0 */
   7
   8 main()
   9 {
  10         int c, i, j, len;
  11         int nlen[100];
  12
  13         len = 0;
  14         for(i = 0; i < 100; ++i) {
  15                 nlen[i] = 0;
  16         }
  17
  18         while((c = getchar()) != EOF) {
  19                 if(c == ' ' || c == '\n' || c == '\t') {
  20                         ++nlen[len];
  21                         len = 0;
  22                 } else {
  23                         len++;
  24                 }
  25         }
  26
  27         for (i = 1; i < 100; ++i) {
  28                 if (nlen[i] > 0)
  29                 {
  30                         printf("%d: ", i);
  31                         for (j = 0; j < nlen[i]; ++j) {
  32                                 printf("*");
  33                         }
  34                         printf("\n");
  35                 }
  36         }
  37 }