C语言实现简单通讯录分享！

本文实例为大家分享了C语言实现简易通讯录的具体代码，供大家参考，具体内容如下

一、概述

通讯录的实现其中包括了指针、结构体、动态内存管理、文件的读写操作等知识点，是对这些知识点应用巩固的非常好的例子；

通讯录功能如下：

二、代码如下

contact.h

  #ifndef CONTACT_H  #define CONTACT_H    #define NAME_MAX 20  #define SEX_MAX 10  #define TEL_MAX 12  #define ADDR_MAX 20  #define MEMBER_MAX 1    typedef struct info  {   char name[NAME_MAX];   char sex[SEX_MAX];   int age;   char tele[TEL_MAX];   char addr[ADDR_MAX];  }info;    typedef struct contact  {   info *data;   int size;   int capacity;  }contact, *pcontact;    //初始化通讯录  void InitContact(pcontact list);  //添加联系人  void AddContact(pcontact list);  //删除联系人  void DellContact(pcontact list);  //查找联系人  void FindContact(pcontact list);  //修改联系人  void ModContact(pcontact list);  //显示所有联系人  void ShowContact(pcontact list);  //联系人排序（选择法）  void SortContact(pcontact list);  //检查容量  int CheckSize(pcontact list);  //查找联系人在数组data第几个位置  int FindContactAddr(pcontact list);  //从文件中加载联系人到内存  void LoadContact(pcontact list);  //将联系人从内从中保存到文件  void SaveContact(pcontact list);    #endif

contact.c

  #include <stdio.h>  #include <stdlib.h>  #include <string.h>  #include "contact.h"    //初始化通讯录  void InitContact(pcontact list)  {   list->data = (info *)malloc(sizeof(info)* MEMBER_MAX);   list->size = 0;   list->capacity = MEMBER_MAX;   //每次初始化是加载一遍文件，防止最新录入的在保存在文件时覆盖上次   //打开程序时保存的信息   LoadContact(list);  }    //添加联系人  void AddContact(pcontact list)  {   info tmp_member;   if (CheckCapacity(list) == 0)   {   printf("成员已满，添加失败！");   return;   }     printf("请输入姓名:");   scanf("%s", tmp_member.name);   printf("请输入性别:");   scanf("%s", tmp_member.sex);   printf("请输入年龄:");   scanf("%d", &tmp_member.age);   printf("请输入电话:");   scanf("%s", tmp_member.tele);   printf("请输入地址:");   scanf("%s", tmp_member.addr);   list->data[list->size] = tmp_member;   printf("添加成功！n");   list->size++;  }    //删除联系人  void DellContact(pcontact list)  {   char tmp_name[NAME_MAX] = { 0 };   int ret = 0;   printf("请输入姓名:");   scanf("%s", tmp_name);   ret = FindContactAddr(list, tmp_name);   if (ret == -1)   {   printf("无此联系人！n");   return;   }   for (ret; ret < list->size - 1; ret++)   {   list->data[ret] = list->data[ret + 1];   }   printf("删除成功！n");   list->size--;  }    //查找联系人  void FindContact(pcontact list)  {   char tmp_name[NAME_MAX] = { 0 };   printf("请输入姓名:");   scanf("%s", tmp_name);   for (int i = 0; i < list->size; i++)   {   if (strcmp(tmp_name, list->data[i].name) == 0)   {   printf("===============================n");   printf("姓名:%sn", list->data[i].name);   printf("性别:%sn", list->data[i].sex);   printf("年龄:%dn", list->data[i].age);   printf("电话:%sn", list->data[i].tele);   printf("地址:%sn", list->data[i].addr);   printf("===============================n");   return;   }   }   printf("无此联系人！n");  }    //查找联系人在数组data第几个位置  int FindContactAddr(pcontact list, char *tmp_name)  {   for (int i = 0; i < list->size; i++)   {   if (strcmp(tmp_name, list->data[i].name) == 0)   return i;   }   return -1;  }    //修改联系人  void ModContact(pcontact list)  {   info tmp_member;   int ret = 0;   printf("请输入姓名:");    scanf("%s", tmp_member.name);   ret = FindContactAddr(list, tmp_member.name);   if (ret == -1)   {   printf("无此联系人！n");   return;   }   printf("请输入性别:");   scanf("%s", tmp_member.sex);   printf("请输入年龄:");   scanf("%s", &tmp_member.age);   printf("请输入电话:");   scanf("%s", tmp_member.tele);   printf("请输入地址:");   scanf("%s", tmp_member.addr);   list->data[ret] = tmp_member;   printf("修改成功!n");  }    //联系人排序（选择法）  void SortContact(pcontact list)  {   info tmp_member;   for (int i = 0; i < list->size - 2; i++)   {   for (int j = 1; j < list->size - 1; j++)   {   if (strcmp(list->data[i].name, list->data[j].name) > 0)   {   tmp_member = list->data[i];   list->data[i] = list->data[j];   list->data[j] = tmp_member;   }   }   }  }    //检查上次动态开辟的空间是否够用，不够时继续开辟  int CheckCapacity(pcontact list)  {   if (list->size == list->capacity)   {   info *tmp = (info *)malloc(sizeof(info)* (list->capacity + 10));   if (tmp == NULL)   return 0;   memcpy(tmp, list->data, sizeof(info) * list->size);   free(list->data);   list->data = tmp;   list->capacity += 10;   }   return 1;  }    //显示所有联系人  void ShowContact(pcontact list)  {   for (int i = 0; i < list->size; i++)   {   printf("============第%d位==============n", i + 1);   printf("姓名:%sn", list->data[i].name);   printf("性别:%sn", list->data[i].sex);   printf("年龄:%dn", list->data[i].age);   printf("电话:%sn", list->data[i].tele);   printf("地址:%sn", list->data[i].addr);   printf("===============================n");   }  }    //从文件中加载联系人到内存  void LoadContact(pcontact list)  {   info tmp_member;   FILE *pf = NULL;   pf = fopen("./contatc.dat", "rb");   if (pf == NULL)   perror("fopen error");   //按照内存块读取，一次读1块，1块大小是sizeof(info)   while (fread(&tmp_member, sizeof(info), 1, pf))   {   if (CheckCapacity(list))   {   list->data[list->size] = tmp_member;   list->size++;   }   }   if (pf != NULL)   {   fclose(pf);   pf = NULL;   printf("加载成功！n");   }  }    //将联系人从内从中保存到文件  void SaveContact(pcontact list)  {   FILE *pf = NULL;   pf = fopen("./contatc.dat", "wb");   if (pf == NULL)   perror("fopen error");   for (int i = 0; i < list->size; i++)   {   //按照内存块写入，一次写1块，1块大小是sizeof(info)   fwrite(list->data + i, sizeof(info), 1, pf);   }    if (pf != NULL)   {   fclose(pf);   pf = NULL;   printf("保存成功！n");   }  }

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