计算文本中的行数，字符串数以及字符个数

计算文本中的行数，字符串数以及字符个数

#include <stdio.h>

#include <string.h>

main()

{

char line[100],ctr;
 int i,c,
  end = 0,
  characters = 0,
  words = 0,
  lines = 0;

 printf("Key in the text.\nGive one space after each word.\n");
 printf("When completed,press 'Return'.^_^\n\n");

 while (end == 0)
 {
  //reading a line of text.
  c = 0;
  while((ctr=getchar())!='\n')
   line[c++]=ctr;
  line[c]='\0';
  //counting the words in a line.
  if (line[0]=='\0')
  {
   break;
  }
  else
  {
   words++;
   for(i=0;line[i]!='\0';i++)
    if(line[i] == ' '|| line[i] == '\t')
     words++;
    

  }
     //counting lines and characters.
  lines++;
  characters = characters + strlen(line);
 }

 printf("\nNumber of lines = %d\n",lines);
 printf("Number of words = %d\n",words);
 printf("Number of characters = %d\n",characters);

}