1-12.c

   1 #include <stdio.h>
   2 /* exercise 1-12: print input, one word per line */
   3 /* general idea:
   4         accept input line
   5         print newline if whitespace is encountered
   6         continue reading input, but don't copy to stdout
   7         begin copying again on next line after reading non-whitespace chars
   8         stop once EOF is read
   9 */
  10 main() {
  11         int c;
  12
  13         while((c = getchar()) != EOF) {
  14
  15                 if(c == ' ' || c == '\t' || c == '\n') {
  16                         putchar('\n');
  17                         while(c == ' ' || c == '\t' || c == '\n')
  18                                 c = getchar();
  19                 }
  20                 putchar(c);
  21
  22         }
  23         putchar('\n');
  24 }