one word per line

/* writes one word per line*/
 
#include <stdio.h>
 
#define YES 1
#define NO 0
 
int main (int argc, const char * argv[]){
	int c, nl, INWORD;
	INWORD = NO;
	nl='\n';	
	while((c=getchar())!=EOF){
		if(INWORD==YES){		
			if (c=='\n' || c=='\t' || c==' ') {
				putchar(nl);
				INWORD=NO;
				c=getchar();
				}
			else {
				putchar(c);
				c=getchar();
			}
		}
		else {
			if (c=='\n' || c=='\t' || c==' ') {
				c=getchar();
			}
			else{
				INWORD=YES;
				putchar(c);
				c=getchar();
			}
		}
	}		
}