【C语言基础】C语言通讯录（加了文件读写）

AddressBook.h

#pragma once

#include
#include

//#define FILE_PATH  "./Contact.txt"
#define FLIE_PATH2  "D://学习工作/我的代码/作业/数据结构/AddressBook/Contact.DAT"

//定义两个结构体

#define NAME_SIZE 200
#define PHONE_SIZE 200
#define ADDR_SIZE 200

typedef struct PersonInfo {

	char name[NAME_SIZE];
	char phone[PHONE_SIZE];
	char addr[ADDR_SIZE];

}PersonInfo;

typedef struct AddrBook {

	PersonInfo* data;
	size_t size;
	size_t capacity;

}AddrBook;

#define DEFSULT_SZ 5

//初始化通讯录
void InitContact(AddrBook* addr);
//对通讯录进行扩容
void CheckCapacity(AddrBook* addr);
//在通讯录中增加条目
void AddContact(AddrBook* addr);

//通过姓名查找，如果有返回数组下标
int FindContactWithName(AddrBook* addr, char* name);
//通过电话号码查找，如果有就返回下标
int FindContactWithPhoneNumber(AddrBook* addr, char* phonenumber);

//删除通讯录中的联系人信息
void DeleteContact(AddrBook* addr);


//打印通讯录中所有联系人信息
void AddrBookDisplay(AddrBook* addr);

//打印单个联系人
void PrintSingleContact(AddrBook* addr, int index);

//按规则查找指定联系人
void AddrBookFind(AddrBook* addr);

//销毁通讯录
void AddrBookDestory(AddrBook* addr);

//修改通讯录中某个联系人的信息
void AddrBookModify(AddrBook* addr);

//把联系人保存到文件流中
void FlieSave(AddrBook addr);

/*从 文件中读取已保存的联系人信息*/
void FileRead(AddrBook addr);

AddressBook.c

#define _CRT_SECURE_NO_WARNINGS 1

#include
#include
#include
#include"AddressBook.h"

void InitContact(AddrBook* addr) {

	if (addr == NULL) {
		return;
	}
	addr->size = 0;
	addr->data = (AddrBook*)malloc(DEFSULT_SZ *sizeof(AddrBook));
	if (addr->data == NULL) {
		printf("初始化失败！");
		return;
	}

	addr->capacity = DEFSULT_SZ;
}

void CheckCapacity(AddrBook* addr) {
	if (addr == NULL) {
		return;
	}
	//通讯录的大小已经等于容量了
	if (addr->size == addr->capacity) {
		//这个时候需要扩容
		addr->capacity = addr->capacity * 2 + 1;
		AddrBook* ptr = realloc(addr->data, (sizeof(AddrBook)* addr->capacity));

		if (ptr == NULL) {
			printf("扩容失败！\n");
			return;
		}
		else{
			addr->data = ptr;
		}
		printf("扩容成功！\n");
	}
}

void AddContact(AddrBook* addr) {
	if (addr == NULL) {
		return;
	}
	//增加联系人之前判断通讯录容量是否已满，如果是则扩容
	CheckCapacity(addr);

	printf("请开始添加联系人信息->\n");
	printf("请输入联系人姓名：");
	scanf("%s \n", addr->data->name);
	printf("请输入联系人电话号码: ");
	scanf("%s \n", addr->data->phone);
	printf("请输入联系人地址:");
	scanf("%s \n", addr->data->addr);
	++addr->size;
	printf("添加成功！\n");
}

//通过姓名查找，如果有返回数组下标
int FindContactWithName(AddrBook* addr, const char* name) {
	if (addr == NULL) {
		return;
	}
	int i = 0;
	for (; i < addr->size; i++) {
		if (strcmp(addr->data[i].name, name) == 0) {
			return i;
		}
	}
	return -1;
}
//通过电话号码查找，如果有就返回下标
int FindContactWithPhoneNumber(AddrBook* addr,char phonenumber) {
	if (addr == NULL) {
		return;
	}
	int i = 0;
	for (; i < addr->size; i++) {
		if (strcmp(addr->data[i].phone, phonenumber) == 0) {
			return i;
		}
	}
	return -1;
}
//删除联系人
void DeleteContact(AddrBook* addr) {

	if (addr == NULL) {
		return;
	}
input: 
	printf("请选择删除方式：\n\1.通过联系人姓名删除\n");
	printf("2.通过联系人电话号码删除\n");

	int n = 0;
	scanf("%d\n", &n);
	if (n == 1) {
//		system("cls");
		char name[NAME_SIZE];
		printf("请输入您所需要删除的联系人姓名: ");
		scanf("%s", name);
		int ret = FindContactWithName(addr, name);
		if (ret == -1) {
			printf("您查找的联系人姓名不存在\n");
			return;
		}
		else {

			for (; ret < addr->size; ret++) {
				addr->data[ret] = addr->data[ret + 1];
			}
			addr->size--;
			printf("删除成功!");
		}
	
	}
	else if (n == 2) {
		system("cls");
		char phone[PHONE_SIZE];
		printf("请输入您所需要删除的联系人电话号码：");
		scanf("%s", phone);
		int ret = FindContactWithPhoneNumber(addr, phone);

		if (ret == -1) {
			printf("电话号码未与任何一个联系人匹配！");
			return;
		}
		else {
			int i = ret;
			for (; i < addr->size; i++) {
				addr->data[i] = addr->data[i + 1];
			}
			addr->size;
			printf("删除成功");
		}
	}
	else {
		printf("输入错误，请重新输入:");
		goto input;
	}
}

//打印联系人信息
void AddrBookDisplay(AddrBook* addr) {

	if (addr == NULL) {
		return;
	}
	printf("%15s\t%11s \t%20s\t\n", "Name", "Phone", "Address");

	int i = 0;
	for (; i < addr->size; i++) {
		printf("\t%5s\t %11s\t %20s\n",
			                                  addr->data[i].name,
		                                	  addr->data[i].phone,
			                                  addr->data[i].addr);
	}
}


//打印单个联系人
void PrintSingleContact(AddrBook* addr, int index) {
	if (addr == NULL) {
		return;
	}
	printf("%15s\t%11s \t%20s\t\n", "Name", "Phone", "Address");
	printf("\t%5s\t %11s\t %20s\n",
		addr->data[index].name,
		addr->data[index].phone,
		addr->data[index].addr);
}

//按照规则查找指定的联系人
void AddrBookFind(AddrBook* addr) {

	if (addr == NULL) {
		return;
	}
	printf("请选择查找联系人的方式：\n");
	printf("1.通过姓名查找\n");
	printf("1.通过电话号码查找\n");
	int  n = 0;
input2:
	scanf("%d", &n);
	if (n == 1) {
		char Name[NAME_SIZE];
		printf("请输入需要查找的联系人姓名：");
		scanf("%s\n", Name);
		int ret = FindContactWithName(addr, Name);
		if (ret == -1) {
			printf("没有查找到相应的联系人！\n");
			return;
		}
		else {
			PrintSingleContact(addr, ret);
			printf("查找成功!");
		}
	}
	else if (n == 2) {
		char Phone[PHONE_SIZE];
		printf("请输入需要查找的联系人电话号码：");
		scanf("%s\n", Phone);
		int index = FindContactWithPhoneNumber(addr, Phone);
		if (index == -1) {
			printf("没有查找到相应的联系人!");
		}
		else {
			PrintSingleContact(addr, index);
			printf("查找成功!");
		}
	}
	else {
		printf("选择错误，请重新输入:");
		goto input2;
	}

}

//销毁通讯录
void AddrBookDestory(AddrBook* addr) {
	if (addr == NULL) {
		return;
	}
	//内存空间被释放后，一定要将指针设为NULL，
	//否则万一内存空间未被重新分配，就可能会被指针调用，差不多是这么个意思
	free(addr->data);
	addr->data = NULL;
	addr->size = 0;
	addr->capacity = 0;

}

//修改通讯录中某个联系人的信息
void AddrBookModify(AddrBook* addr) {
	if (addr == NULL) {
		return;
	}
	printf("请输入您想要修改的联系人姓名：");
	char name[NAME_SIZE];
	scanf("%s", name);
	int index = FindContactWithName(addr, name);
	if (index == NULL) {
		//查无此人
		return;
	}
	else {
		printf("请开始修改->:\n");
		printf("请重新输入联系人姓名：");
		scanf("%s\n", addr->data[index].name);
		printf("请重新输入联系人电话号码: ");
		scanf("%s\n", addr->data[index].phone);
		printf("请重新输入联系人地址：");
		scanf("%s\n", addr->data[index].addr);
		printf("修改成功！");
	}
}

//把联系人保存到文件流中

void FlieSave(AddrBook addr) {


	int i = 0;
	FILE* pf = fopen(FLIE_PATH2, "w");

	if (pf == NULL) {
		perror("error");
		exit(EXIT_FAILURE);
	}

	for (; i < addr.size; i++) {

	fwrite(&(addr.data[i]), sizeof(PersonInfo), 1, pf);

	}
	fclose(pf);

}
/*从 文件中读取已保存的联系人信息*/
void FileRead(AddrBook addr) {
	FILE* pfread = fopen(FLIE_PATH2, "r");
	if (pfread == NULL) {
		perror("open file for read");
		exit(EXIT_FAILURE);
	}
	PersonInfo per = { 0 };
	int  i = 0;
	while (fread(&per, sizeof(PersonInfo), 1, pfread)) {
		addr.data[i] = per;
		i++;
		addr.size++;
	}
	fclose(pfread);
}

test.c

#define _CRT_SECURE_NO_WARNINGS 1

#include
#include
#include"AddressBook.h"


void menu() {
	printf("//////////////////////////////////////\n");
	printf("1.添加联系人.\n");
	printf("2.删除联系人.\n");
	printf("3.查找联系人.\n");
	printf("4.显示所有的联系人.\n");
	printf("5.修改联系人信息.\n");
	printf("6.清空所有联系人信息.\n");
	printf("7.把联系人保存至文件.\n");
	printf("8.退出.\n");
	printf("//////////////////////////////////////\n\n");
	printf("欢迎使用通讯录小程序\n");
}

void test() {
	 AddrBook addr;
	 InitContact(&addr);
	 FileRead(addr);
	 int choice = 1;
	 do {
		 menu();
		 printf("请选择->");
		 scanf("%d\n", &choice);
//		 system("cls");

		 switch (choice) {
		 case 1:
			 AddContact(&addr);
			 break;
		 case 2:
			 DeleteContact(&addr);
			 break;
		 case 3:
			 AddrBookFind(&addr);
			 break;
		 case 4:
			 AddrBookDisplay(&addr);
			 break;
		 case 5:
			 AddrBookModify(&addr);
			 break;
		 case 6:
			 AddrBookDestory(&addr);
			 break;
		 case 7:
			 FlieSave(addr);
			 break;
		 case 8:
			 exit(0);
			 break;
		 default:
			 break;
		 }
	 } while (choice);
}

int main() {
	test();
	system("pause");
	return 0;
}