struct _iobuf {
        char *_ptr;
        int   _cnt;
        char *_base;
        int   _flag;
        int   _file;
        int   _charbuf;
        int   _bufsiz;
        char *_tmpfname;
       };
typedef struct _iobuf FILE;

FILE* pf

FILE * fopen ( const char * filename, const char * mode );

int fclose ( FILE * stream );

// 示例
#include <stdio.h>
int main ()
{
  FILE * pFile;
  //打開(kāi)文件
  pFile = fopen ("myfile.txt","w");
  //文件操作
  if (pFile!=NULL)
 {
    fputs ("fopen example",pFile);
    //關(guān)閉文件
    fclose (pFile);
 }
  return 0; 
}

//這是我以前寫通信錄時(shí)用到的一些方法
typedef struct Contact
{
	struct contact_person* data;
	int count;	//通訊錄中人員個(gè)數(shù)
	int capacity;
}Contact;//通訊錄類型的指針

void Save(Contact* con) //將數(shù)據(jù)存儲(chǔ)到文件中
{
	FILE* fp = fopen("contact.txt", "wb");
	if (fp == NULL)
	{
		printf("Save()::%s", strerror(errno)); //如果打開(kāi)失敗，報(bào)錯(cuò)
		return;
	}
	else
	{
		fwrite(con->data, sizeof(struct contact_person), con->count, fp);//將數(shù)據(jù)寫到contect.txt中
	}
	fclose(fp); //關(guān)閉文件
	fp = NULL;
}

void Load(Contact* con) //將文件中的數(shù)據(jù)加載到內(nèi)存中
{
	FILE* fp = fopen("contact.txt", "r");
	if (fp == NULL)
	{
		printf("Load()::%s", strerror(errno));
		return;
	}
	else
	{
		struct contact_person tmp;
		while (fread(&tmp, sizeof(struct contact_person), 1, fp))// fread的返回值為讀到數(shù)據(jù)的個(gè)數(shù)，用來(lái)判斷是否繼續(xù)讀取
		{
			Check_capacity(con);//檢測(cè)通訊錄容量是否足夠
			con->data[con->count] = tmp;
			con->count++;
		}
	}
	fclose(fp);
	fp = NULL;
}