C語言統計字符小練習

#include <stdio.h>

#define IN 1  //在單詞中
#define OUT 0  //不在單詞中
/*
   The C programming language[second edition] 練習小程序
   功能：統計輸入的字符數、單詞數和行數。
*/
int main()
{
  int c;	//存儲輸入的單詞
  int STATE = OUT;  //狀態初始為不在單詞中
  int nc = 0;  //記錄新的字符
  int nl = 0;  //記錄新的行
  int nw = 0;  // 記錄新的單詞
  
  while ((c = getchar()) != 'q' )  //鍵入字符'q'則退出輸入
  {
    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);
  return 0;
}