统计行数、单词数、字符数

#include <stdio.h>
#define IN 1    /*在单词外*/
#define OUT  0  /*在单词内*/
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",nl,nw,nc);
}