C语言实现电话簿项目分享！

本文实例为大家分享了C语言实现电话簿项目的具体代码，供大家参考，具体内容如下

实现思路

这个程序的整体思路和实现还是很简单的，我们利用了动态分配内存的方式首先创建了电话簿联系人类型，然后创建电话簿类，其实事联系人类型构成的全局数组，然后分别实现，界面函数，增删改查打印等功能，在主函数离实现总体思路，利用while循环让用户选择具体功能调用函数的方式进行总体实现。

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2019.3.12更新：
利用文件操作使得系统可以进行数据的保存。

实现代码

  #include <stdio.h>  #include <stdlib.h>  #include <assert.h>  #include <string.h>  #define ADDRESS_INFOS_MAX 200  typedef struct AddressInfo  {   char name[1024];   char phone[1024];  }AddressInfo;  typedef struct AddressBook  {   AddressInfo* infos;   int size;   int capacity;//容量  }AddressBook;  AddressBook g_addr_book;  //初始化  void Init(AddressBook* addr_book)  {   assert(addr_book != NULL);   addr_book->size = 0;   addr_book->capacity = 10;   addr_book->infos = (AddressInfo*)malloc(sizeof(AddressInfo) * addr_book->capacity);   return;  }  //菜单  int Menu()  {   printf("===========================n");   printf("1、新增n");   printf("2、删除n");   printf("3、修改n");   printf("4、查找n");   printf("5、排序n");   printf("6、显示全部n");   printf("7、删除全部n");   printf("0、退出n");   printf("===========================n");   int choice;   scanf("%d", &choice);   return choice;  }  //扩容  void Realloc(AddressBook* addr_book)  {   assert(addr_book != NULL);   //1、扩大capacity的取值   addr_book->capacity *= 2;   //2、申请一个更大的内存   AddressInfo* old_infos = addr_book->infos;   addr_book->infos = (AddressInfo*)malloc(sizeof(AddressInfo) * addr_book->capacity);   //3、将原有内存中的数据复制过来   for(int i = 0; i < addr_book->size; i++)   {    addr_book->infos[i] = old_infos[i];   }   //4、释放原有的内存   free(old_infos);    //此处每次扩容阔多少由我们自己定制   printf("扩容成功！n");  }  //新增  void AddAddressBook(AddressBook* addr_book)  {   assert(addr_book != NULL);   if(addr_book->size >= addr_book->capacity)   {    printf("空间已满进行扩容！n");    Realloc(addr_book);//扩容   }   printf("请输入联系人信息！n");   AddressInfo* p = &addr_book->infos[addr_book->size];   printf("请输入联系人姓名：");   scanf("%s", p->name);   printf("请输入联系人电话：");   scanf("%s", p->phone);   addr_book->size++;   printf("添加成功！n");   return;  }  //删除  void DelAddressBook(AddressBook* addr_book)  {   assert(addr_book != NULL);   int id;   printf("请输入要删除的联系人序号：");   scanf("%d", &id);   if(id < 0 || id >= addr_book->size)   {    printf("输入需要有误！n");    return;   }   printf("删除的序号为[%d]，确认删除请输入Y:", id);   char sure[1024] = {0};   scanf("%s", sure);   if(strcmp(sure, "Y") != 0)   {    printf("删除中止！n");    return;   }   AddressInfo* from = &addr_book->infos[addr_book->size - 1];   AddressInfo* to = &addr_book->infos[0];   *to = *from;   addr_book->size--;   return;  }  //修改  void ModifyAddressBook(AddressBook* addr_book)  {   assert(addr_book != NULL);   printf("修改联系人！n");   printf("请输入需要修改的联系人序号：");   int id = 0;   scanf("%d", &id);   if(id < 0 || id >= addr_book->size)   {    printf("输入序号错误！n");    return;   }   AddressInfo* p = &addr_book->infos[id];   char input[1024] = {0};   printf("请输入要修改的姓名：");   scanf("%s", input);   if(strcmp(input, "#") != 0)   {    strcpy(p->name, input);   }   printf("请输入要修改的电话：");   scanf("%s", input);   if(strcmp(input, "#") != 0)   {    strcpy(p->phone, input);   }   printf("修改成功！n");   return;  }  //查找  void FindAddressBook(AddressBook* addr_book)  {   assert(addr_book != NULL);   printf("开始进行查找！n");   printf("请输入要查找的姓名：");   char name[1024] = {0};   scanf("%s", name);   int count = 0;   for(int i = 0; i < addr_book->size; i++)   {    AddressInfo* p = &addr_book->infos[i];    if(strcmp(name, p->name) == 0)    {     printf("[%d] %st %s", i, p->name, p->phone);     ++count;    }   }   return;  }  //排序  void SortAddressBook(AddressBook* addr_book)  {   assert(addr_book != NULL);   for(int i = 0; i < addr_book->size - 1; i++)//冒泡排序   {    for(int j = 0; j < addr_book->size - i - 1; j++)    {     if(strcmp(addr_book->infos[j].name, addr_book->infos[j + 1].name) > 0)     {      AddressInfo temp = addr_book->infos[j];      addr_book->infos[j] = addr_book->infos[j + 1];      addr_book->infos[j + 1] = temp;     }    }   }   printf("排序完成！n");  }  //打印全部  void PrintAllAddressBook(AddressBook* addr_book)  {   assert(addr_book != NULL);   printf("显示所有联系人！n");   for(int i = 0; i < addr_book->size; i++)   {    AddressInfo* p = &addr_book->infos[i];    printf("[%d] %st%sn", i, p->name, p->phone);   }   printf("共显示了%d条数据！n", addr_book->size);   return;  }  //清除全部  void ClearAllAddressBook(AddressBook* addr_book)  {   assert(addr_book != NULL);   printf("确定要清除全部信息么，确定请输入Y：");   char sure[1024] = {0};   scanf("%s", sure);   if(strcmp(sure, "Y") != 0)   {    printf("清除已经取消！n");    return;   }   addr_book->size = 0;   return;  }  //文件读取  size_t Read(AddressBook* addr_book)  {   FILE* fp = fopen("./AddrBookData.txt", "r");   if(fp == NULL)   {    fp = fopen("./AddrBookData.txt", "w+");   }   size_t n = 0;   char* buf[1024] = { 0 };   while(fgets(buf, sizeof(buf), fp) != NULL)   {    if(addr_book->size >= addr_book->capacity)    {     Realloc(addr_book);//扩容    }    AddressInfo* p = &addr_book->infos[addr_book->size];    sscanf(buf, "%s %s", p->name, p->phone);    addr_book->size++;   }   fclose(fp);   n = addr_book->size;   printf("读取了%lu条数据！n", n);   return n;  }  //文件存储  size_t Save(AddressBook* addr_book)  {   FILE* fp = fopen("./AddrBookData.txt", "w");   size_t n = 0;   for(int i = 0; i < addr_book->size; i++)   {    fprintf(fp, "%s %sn", addr_book->infos[i].name, addr_book->infos[i].phone);    n++;   }   fclose(fp);   printf("存储了%lu条数据！n", n);   return n;  }  int main()  {   Init(&g_addr_book);   Read(&g_addr_book);   typedef void (*ptr_func)(AddressBook*);   ptr_func table[] = {    AddAddressBook,    DelAddressBook,    ModifyAddressBook,    FindAddressBook,    SortAddressBook,    PrintAllAddressBook,    ClearAllAddressBook,   };   while(1)   {    int choice = Menu();    if(choice == 0)    {     printf("使用完毕，退出！n");     Save(&g_addr_book);     return 0;    }    table[choice - 1](&g_addr_book);   }  }

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