本文实例为大家分享了C语言实现通讯录的具体代码,供大家参考,具体内容如下
实现的功能有:
1.初始化通讯录;
2. 通讯录中增加条目;
3. 删除通讯录中的指定条目;
4. 按指定规则查找通讯录中特定条目;
5. 打印通讯录中的所有信息;
6. 修改通讯录的指定条目;
7. 销毁通讯录;
8. 将通讯录内容保存在文件;
9. 将文件中的内容加载回内存。
**Addr_Book.h**
#pragma once #include <stddef.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #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; #define FILE_PATH "./data.txt" enum { DISPLAY = 1, ADD = 2, ERASE = 3, FIND = 4, MODIFY = 5, EXIT = 0 }; typedef struct AddrBook { PersonInfo* data;//内容 size_t size; //联系人数量 size_t capacity; //通讯录容量 } AddrBook; /** * @brief 初始化通讯录 * * @param addr_book */ void AddrBookInit(AddrBook* addr_book); /** * @brief 通讯录中增加条目 * * @param addr_book */ void AddrBookAdd(AddrBook* addr_book); /** * @brief 删除通讯录中的指定条目 * * @param addr_book */ void AddrBookErase(AddrBook* addr_book); /** * @brief 按指定规则查找通讯录中特定条目 * * @param addr_book */ void AddrBookFind(AddrBook* addr_book); /** * @brief 打印通讯录中的所有信息 * * @param addr_book */ void AddrBookDisplay(AddrBook* addr_book); /** * @brief 修改通讯录的指定条目 * * @param addr_book */ void AddrBookModify(AddrBook* addr_book); /** * @brief 销毁通讯录 * * @param addr_book */ void AddrBookDestroy(AddrBook* addr_book); /** * @brief 将通讯录内容保存在文件 * * @param addr_book */ void AddrBookSave(AddrBook* addr_book); /** * @brief 将文件中的内容加载回内存. * * @param addr_book */ void AddrBookLoad(AddrBook* addr_book);
**Addr_Book.c**
#define _CRT_SECURE_NO_WARNINGS 1 #include "Addr_Book.h" //打印通讯录 void AddrBookDisplay(AddrBook* addr_book){ if (addr_book == NULL){ return; } printf("n====================通讯录=========================n"); printf("| 姓名 | 号码 | 地址 |n"); printf("|----------------|---------------|----------------|n"); size_t i = 0; for (; i < addr_book->size; ++i){ printf("| %s | %s | %s |n", addr_book->data[i].name, addr_book->data[i].phone, addr_book->data[i].addr); printf("|----------------|---------------|----------------|n"); } } //初始化通讯录 void AddrBookInit(AddrBook* addr_book){ if (addr_book == NULL){ return ; } addr_book->size = 0; addr_book->capacity = 1; addr_book->data = (PersonInfo*)malloc(sizeof(PersonInfo)*addr_book->capacity); } //扩大内存 void AddrBookRelloc(AddrBook* addr_book){ if (addr_book == NULL){ return; } addr_book->capacity = addr_book->capacity * 2 + 1;//内存不够,扩大容量 PersonInfo* new_data = (PersonInfo*)malloc(sizeof(PersonInfo)*addr_book->capacity);//开辟新的空间大小 size_t i = 0; for (; i < addr_book->size; ++i){ new_data[i] = addr_book->data[i];//将旧内存赋给新内存 } free(addr_book->data);//释放旧内存 addr_book->data = new_data; } //添加联系人 void AddrBookAdd(AddrBook* addr_book){ if (addr_book == NULL){ return; } if (addr_book->size >= addr_book->capacity){ //内存不够需要扩大内存 AddrBookRelloc(addr_book); } size_t cur = addr_book->size; ++addr_book->size; printf("添加联系人n"); printf("输入姓名:"); scanf("%s", addr_book->data[cur].name); printf("输入号码:"); scanf("%s", addr_book->data[cur].phone); printf("输入地址:"); scanf("%s", addr_book->data[cur].addr); printf("添加结束!n"); } //删除指定联系人 void AddrBookErase(AddrBook* addr_book){ if (addr_book == NULL){ return; } char delete_name[200] = {0}; printf("输入要删除联系人姓名:"); scanf("%s", &delete_name); size_t i = 0; for (; i <addr_book->size;++i){ if (strcmp(addr_book->data[i].name, delete_name)){ free(addr_book->data); addr_book->size--; printf("已删除!"); } else{ printf("删除失败,请重新输入联系人!"); } } } //保存内容 void AddrBookSave(AddrBook* addr_book){ FILE* fp = fopen(FILE_PATH, "w"); if (fp == NULL){ printf("打开文件失败!n"); return; } size_t i = 0; for (; i < addr_book->size; ++i){ fprintf(fp, "| %s | %s | %s |n", addr_book->data[i].name, addr_book->data[i].phone, addr_book->data[i].addr); } fclose(fp); } //按姓名查找联系人 void AddrBookFind(AddrBook* addr_book){ if (addr_book == NULL){ return; } char delete_name[200] = { 0 }; printf("输入所查找联系人姓名:"); scanf("%s", &delete_name); size_t i = 0; for (; i <addr_book->size; ++i){ if (strcmp(addr_book->data[i].name, delete_name)){ printf("找到了,该联系人信息为:姓名:%s,号码:%s,地址:%sn", addr_book->data[i].name, addr_book->data[i].phone, addr_book->data[i].addr); } else{ printf("此人不存在!n"); } } } //修改联系人信息 void AddrBookModify(AddrBook* addr_book){ if (addr_book == NULL){ return; } char name[200] = { 0 }; printf("输入要修改的联系人免费精选名字大全:"); scanf("%s", &name); size_t i = 0; for (; i < addr_book->size; ++i) { if (strcmp(addr_book->data[i].name, name) == 0) { printf("这是第%lu个联系人:n", i + 1); printf("此人信息为:n 姓名:%s ,电话:%s ,地址:%sn", addr_book->data[i].name, addr_book->data[i].phone, addr_book->data[i].addr); } } size_t num = 0; printf("输入要修改的联系人编号:"); scanf("%lu", &num); char name2[200]; char phone[200]; char addr[200]; printf("请输入新的姓名:"); scanf("%s", name2); strcpy(addr_book->data[num - 1].name, name2); printf("请输入新的电话号码:"); scanf("%s", phone); strcpy(addr_book->data[num - 1].phone, phone); printf("请输入新的地址:"); scanf("%s", addr); strcpy(addr_book->data[num - 1].addr, addr); printf("修改成功!n"); return; } //销毁通讯录 void AddrBookDestroy(AddrBook* addr_book){ if (addr_book == NULL) { printf("addr_book is nulln"); return; } else { addr_book->size = 0; addr_book->capacity = 0; free(addr_book->data); printf("销毁成功!n"); } } //将文件中的内容加载回内存 void AddrBookLoad(AddrBook* addr_book){ if (addr_book = NULL){ printf("通讯录为空!n"); return; } FILE* fp = fopen(FILE_PATH,"r"); if (fp = NULL){ printf("打开文件失败!n"); return; } while (!feof(fp)){ if (addr_book->size >= addr_book->capacity){ AddrBookRelloc(addr_book); } size_t cur = addr_book->size; fscanf(fp, "%s%s%sn", addr_book->data[i].name, addr_book->data[i].phone, addr_book->data[i].addr); addr_book->size++; } fclose(fp); } //=============== //以下为测试代码 //=============== void menu(){ AddrBook addr_book; AddrBookInit(&addr_book); AddrBookLoad(&addr_book); while (1){ printf("============1.打印通讯录=============n"); printf("============2.增加联系人=============n"); printf("============3.删除联系人=============n"); printf("============4.查找联系人=============n"); printf("============5.修改联系人=============n"); printf("============6.销毁通讯录=============n"); printf("============0.退出通讯录=============n"); int choice = 0; printf("请输入所需功能:"); scanf("%d", &choice); switch (choice){ case DISPLAY: AddrBookDisplay(&addr_book); break; case ADD: AddrBookAdd(&addr_book); AddrBookSave(&addr_book); break; case ERASE: AddrBookErase(&addr_book); break; case FIND: AddrBookFind(&addr_book); break; case MODIFY: AddrBookModify(&addr_book); AddrBookSave(&addr_book); break; case DESTROY: AddrBookDestroy(&addr_book); break; case EXIT: printf("退出通讯录!n"); break; default: printf("请输入正确选择:"); break; } } } int main(){ menu(); return 0; }
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