通讯录（文件操作）储存和读取函数代码

//储存通讯录
void file_s(struct  contactslist* p)
{
	FILE* pf=fopen("D:\Desktop\abc.txt", "wb");
	
	for (int a = 0; a < p->n; a++)
	{
		fwrite((struct  contactslist*)&(p->s[a]), sizeof(struct contacts), 1, pf);
	}
	fclose(pf);
	pf = NULL;

}

//加载通讯录
void load(struct  contactslist* p)
{
	FILE* pf = fopen("D:\Desktop\abc.txt", "rb");
	struct  contacts cp;

	while (fread(&cp, sizeof(struct  contacts), 1, pf))
	{
		add_s(p);
		p->s[p->n] = cp;
		p->n++;
	}
	fclose(pf);
	pf = NULL;
}