程序代码：

#include<stdio.h>
#define IN 1
#define OUT 0
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);
}