C语言实现电话簿项目

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] %s\t %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] %s\t%s\n", 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 %s\n", 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);
 }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持猪先飞。