本文例項為大家分享了C語言實現電話簿專案的具體程式碼，供大家參考，具體內容如下

實現思路

這個程式的整體思路和實現還是很簡單的，我們利用了動態分配記憶體的方式首先建立了電話簿聯絡人型別，然後建立電話簿類，其實事聯絡人型別構成的全域性陣列，然後分別實現，介面函式，增刪改查列印等功能，在主函式離實現總體思路，利用while迴圈讓使用者選擇具體功能呼叫函式的方式進行總體實現。

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2019.3.12更新：
利用檔案操作使得系統可以進行資料的儲存。

實現程式碼

#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;
}
//選單
int Menu()
{
 printf("===========================\n");
 printf("1、新增\n");
 printf("2、刪除\n");
 printf("3、修改\n");
 printf("4、查詢\n");
 printf("5、排序\n");
 printf("6、顯示全部\n");
 printf("7、刪除全部\n");
 printf("0、退出\n");
 printf("===========================\n");
 int choice;
 scanf("%d",&choice);
 return choice;
}
//擴容
void Realloc(AddressBook* addr_book)
{
 assert(addr_book != NULL);
 //1、擴大capacity的取值
 addr_book->capacity *= 2;
 //2、申請一個更大的記憶體
 AddressInfo* old_infos = addr_book->infos;
 addr_book->infos = (AddressInfo*)malloc(sizeof(AddressInfo) * addr_book->capacity);
 //3、將原有記憶體中的資料複製過來
 for(int i = 0; i < addr_book->size; i++)
 {
  addr_book->infos[i] = old_infos[i];
 }
 //4、釋放原有的記憶體
 free(old_infos); 
 //此處每次擴容闊多少由我們自己定製
 printf("擴容成功！\n");
}
//新增
void AddAddressBook(AddressBook* addr_book)
{
 assert(addr_book != NULL);
 if(addr_book->size >= addr_book->capacity)
 {
  printf("空間已滿進行擴容！\n");
  Realloc(addr_book);//擴容
 }
 printf("請輸入聯絡人資訊！\n");
 AddressInfo* p = &addr_book->infos[addr_book->size];
 printf("請輸入聯絡人姓名：");
 scanf("%s",p->name);
 printf("請輸入聯絡人電話：");
 scanf("%s",p->phone);
 addr_book->size++;
 printf("新增成功！\n");
 return;
}
//刪除
void DelAddressBook(AddressBook* addr_book)
{
 assert(addr_book != NULL);
 int id;
 printf("請輸入要刪除的聯絡人序號：");
 scanf("%d",&id);
 if(id < 0 || id >= addr_book->size)
 {
  printf("輸入需要有誤！\n");
  return;
 }
 printf("刪除的序號為[%d]，確認刪除請輸入Y:",id);
 char sure[1024] = {0};
 scanf("%s",sure);
 if(strcmp(sure,"Y") != 0)
 {
  printf("刪除中止！\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("修改聯絡人！\n");
 printf("請輸入需要修改的聯絡人序號：");
 int id = 0;
 scanf("%d",&id);
 if(id < 0 || id >= addr_book->size)
 {
  printf("輸入序號錯誤！\n");
  return;
 }
 AddressInfo* p = &addr_book->infos[id];
 char input[1024] = {0};
 printf("請輸入要修改的姓名：");
 scanf("%s",input);
 if(strcmp(input,"#") != 0)
 {
  strcpy(p->name,input);
 }
 printf("請輸入要修改的電話：");
 scanf("%s","#") != 0)
 {
  strcpy(p->phone,input);
 }
 printf("修改成功！\n");
 return;
}
//查詢
void FindAddressBook(AddressBook* addr_book)
{
 assert(addr_book != NULL);
 printf("開始進行查詢！\n");
 printf("請輸入要查詢的姓名：");
 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++)//氣泡排序
 {
  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");
}
//列印全部
void PrintAllAddressBook(AddressBook* addr_book)
{
 assert(addr_book != NULL);
 printf("顯示所有聯絡人！\n");
 for(int i = 0; i < addr_book->size; i++)
 {
  AddressInfo* p = &addr_book->infos[i];
  printf("[%d] %s\t%s\n",p->phone);
 }
 printf("共顯示了%d條資料！\n",addr_book->size);
 return;
}
//清除全部
void ClearAllAddressBook(AddressBook* addr_book)
{
 assert(addr_book != NULL);
 printf("確定要清除全部資訊麼，確定請輸入Y：");
 char sure[1024] = {0};
 scanf("%s","Y") != 0)
 {
  printf("清除已經取消！\n");
  return;
 }
 addr_book->size = 0;
 return;
}
//檔案讀取
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);//擴容
  }
  AddressInfo* p = &addr_book->infos[addr_book->size];
  sscanf(buf,"%s %s",p->phone);
  addr_book->size++;
 }
 fclose(fp);
 n = addr_book->size;
 printf("讀取了%lu條資料！\n",n);
 return n;
}
//檔案儲存
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("儲存了%lu條資料！\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("使用完畢，退出！\n");
   Save(&g_addr_book);
   return 0;
  }
  table[choice - 1](&g_addr_book);
 }
}

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支援我們。