#include <stdio.h>

#define MAXFILENAMESIZE	1024	/* max length of a file name */
#define	IN_WORD		1	/* currently inside a word */
#define NOTIN_WORD	0	/* currently not in a word */

/*
 * count the number of lines, words, and chars in the input
 * a word is a maximal sequence of nonspace characters, so
 * the quote "+++ --- hi bye 879+3" has 5 words ("+++", "---",
 * "hi", "bye", and "879+3")
 */
void wc(char *filename, FILE *fp)
{
	register int c;		/* input char */
	static int totnl = 0;	/* total line count */
	static int totnw = 0;	/* total word count */
	static int totnc = 0;	/* total char count */
	register int nl;	/* line count */
	register int nw;	/* word count */
	register int nc;	/* char count */
	register int state;	/* in or not in a word? */

	/*
	 * initialize
	 */
	nl = nw = nc = 0;
	state = NOTIN_WORD;

	/*
	 * handle input a char at a time
	 */
	while((c = getc(fp)) != EOF){
		/* got another character */
		nc++;
		/* is it a newline? */
		if (c == '\n')
			nl++;
		/* is it a word separator? */
		if (c == ' ' || c == '\t' || c == '\n')
			/* YES -- change state */
			state = NOTIN_WORD;
		else if (state == NOTIN_WORD){
			/* NO -- we're now in a word; update */
			/* the counter and state if need be  */
			state = IN_WORD;
			nw++;
		}
	}

	/*
	 * increment the cumulative counts
	 */
	totnl += nl; totnw += nw; totnc += nc;

	/*
	 * announce the results and quit
	 */
	printf("%6d\t%6d\t%6d\t%s\n", nl, nw, nc, filename);
	printf("%6d\t%6d\t%6d\tcumulative\n", totnl, totnw, totnc);
}

/*
 * read a file name from the standard input,
 * open it, and count characters, words, and lines
 */
void main(void)
{
	char fname[MAXFILENAMESIZE];	/* the file name(s) */
	FILE *fp;			/* file pointer */

	while(printf("file name> "), gets(fname) != NULL){
		/* open the file */
		if ((fp = fopen(fname, "r")) == NULL){
			fprintf(stderr, "Cound not open file %s\n",
								fname);
			continue;
		}
		/* count the characters, etc. */
		wc(fname, fp);
		/* now close it */
		(void) fclose(fp);
	}

	/*
	 * say goodbye!
	 */
	exit(0);
}