Mine

/* Word Counter */
#include <stdio.h>

#define IN 1 /*Inside a word*/
#define OUT 0 /* Outside a word*/

/* Count lines, words, and characters in input*/
main()
{
	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) {
			state = IN;
			++nw;
		}
	}
	printf ("%d %d %d \n, ni, nw, nc);
}