测试文件操作.cpp

电子通讯录

// 11.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "stdio.h"
#define size 2

struct ss
{
	char name[10];
	char num[10];
	char age[5];
	char addr[15];
}stud[size];



void save()
{
	FILE *fp;
	int i;
	if((fp=fopen("ss.txt","wb"))==NULL)
	{
		printf("cannot open file\n");
		return;
	}
	for(i=0;i<size;i++)
		if(fwrite(&stud[i],sizeof(struct ss),1,fp)!=1) 
			printf("file write error\n");

		fclose(fp);
}



void load()
{
	FILE *fp;
	int i;
	if((fp=fopen("ss.txt","rb"))==NULL)
	{
		printf("cannot open file\n");
		return;
	}
	for(i=0;i<size;i++)
	{
		fread(&stud[i],sizeof(struct ss),1,fp);
		printf("%-10s %4s %4s %-15s\n",stud[i].name,stud[i].num,stud[i].age,stud[i].addr);
	}

		fclose(fp);
}




int main(int argc, char* argv[])
{
	int i;
    for(i=0;i<size;i++)
	{
		scanf("%s",stud[i].name);
	    scanf("%s",stud[i].num);
	    scanf("%s",stud[i].age);
	    scanf("%s",stud[i].addr);
	}


	
	save();
	load();
	
}