用C实现文件readLine函数

/ ReadWord.cpp.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include "stdio.h"#include "stdlib.h"#define MAX 64bool readword(FILE *fp,char words[]){ if(fp==NULL)  {  puts("The file is not exist!");  return false; } if(feof(fp)) {  puts("The end of the file!");  return false; } *words='\0'; char vChar=getc(fp); while(vChar!=EOF&&vChar!='\n') {  *(words++)=vChar;  *words='\0';  vChar=getc(fp); } return true;}int _tmain(int argc, _TCHAR* argv[]){ FILE *fp;    char words[MAX];    int i=1; /*  //used to create file content if ((fp = fopen("testFile", "a+")) == NULL) {  fprintf(stdout,"Can't open \"testFile\" file.\n");  exit(1); } puts("Enter words to add to the file; press the Enter key at the beginning of a line to terminate."); while (gets(words) != NULL  && words[0] != '\0')  fprintf(fp, "%s ", words);    puts("File contents:");    rewind(fp);           /// go back to beginning of file     while (fscanf(fp,"%s",words) == 1)        puts(words);*/        if((fp=fopen("testFile","r"))==NULL) {  fprintf(stdout,"Can't open \"testFile\" file.\n");  exit(1); }  while(readword(fp,words)) {  printf("Line %d:",i++);  puts(words); } rewind(fp); if (fclose(fp) != 0)        fprintf(stderr,"Error closing file\n"); return 0;}