kr-wc.c - Kernighan og Ritchies's tilsvarende, men mere generelle program.

Lektion 4 - slide 13 : 13 Program 2

#include <stdio.h>

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

int main(void) {
  int c, nl, nw, nc, state;

  state = OUT;
  nl = nw = nc = 0;
  while ((c = getchar()) != EOF) {
    ++nc;
    if (c == '\n')
      ++nl;
    if (c == ' ' || c == '\n' || c == '\t')
      state = OUT;
    else if (state == OUT) {   /* entering a word */
      state = IN;
      ++nw;
    }
  }

  printf("%d %d %d\n", nl, nw, nc);    
  
  return 0;
}