print a histogram of the lengths of words in its input(vertical)(answer)3.c

#include"stdio.h"
#define IN 1   //inside a word
#define OUT 0   //outside a word
#define MAXHIST 15     //max length of histogram
#define MAXWORD 11     //max length of a word

void main()
{
 int c, i, nc, state;
 int len;   //length of each bar
 int maxvalue;  //maximum value for wl[]
 int ovflow;   //number of overflow words
 int wl[MAXWORD]; //word length counters

 state = OUT;
 nc = 0;    //number of chars in a ward
 ovflow = 0;   //number of words >=MAXWORD
 for(i = 0; i < MAXWORD; ++i)
  wl[i] = 0;
 while((c = getchar()) != EOF)
 {
  if(c == ' '|| c =='\n'|| c =='\t')
  {
   state = OUT;
   if(nc > 0)
    if(nc < MAXWORD)
     ++wl[nc];
    else
     ++ovflow;
   nc = 0;
  }
  else if(state==OUT)
  {
   state = IN;
   nc = 1;
  }else
   ++nc;
 }
 maxvalue = 0;
 for(i = 1;i< MAXWORD;++i)
  if(wl[i]>maxvalue)
   maxvalue = wl[i];
 for(i = 1;i<MAXWORD;++i)
 {
  printf("%5d ~ %5d : ",i,wl[i]);
  if(wl[i]>0)
         len=wl[i]*MAXHIST/maxvalue;
  else
   len = 0;
  while(len>0)
  {
   putchar('*');
   --len;
  }
  putchar('\n');
 }
 if(ovflow > 0)
  printf("There are %d words >= %d\n",ovflow,MAXWORD);
}