C语言实现通讯录小功能

本文实例为大家分享了C语言实现通讯录功能的具体代码，供大家参考，具体内容如下

头文件contact.h

#pragma once
#define  _CRT_SECURE_NO_WARNINGS 1

//#define max 1000

#define fault 3
#define max_name 20
#define max_telephone 12
#define max_sex 5
#define max_address 30

#include<stdio.h>
#include<string.h>
#include<assert.h>
#include<stdlib.h>
#include<errno.h>

enum option
{
 EXIT,
 ADD,
 DEL,
 SEARCH,
 MODIFY,
 SHOW,
 SORT,
 SAVE
};

struct people_information
{
 char name[max_name];
 char telephone[max_telephone];
 char sex[max_sex];
 char address[max_address];
 int age;
};

struct contact
{
 //struct people_information data[max];
 struct people_information *data;//动态空间
 int size;//记录当前有多少信息
 int capacity;//当前最大容量
};

void initcontact(struct contact* ps);//初始化函数
void add(struct contact* ps);
void my_delete(struct contact* ps);
void search(const struct contact* ps);
void modify(struct contact* ps);//修改指定联系人
void show(const struct contact* ps);//展示全部联系人
void sort(struct contact* ps);
void destroy(struct contact* ps);
void save(struct contact* ps);

分装函数contact.c

#define  _CRT_SECURE_NO_WARNINGS 1

#include"contact.h"


void initcontact(struct contact* ps)
{
 //memset(ps->data, 0, sizeof(ps->data));
 //ps->size = 0;//初始化通讯录中只有0个信息
 ps->data = (struct people_information*)malloc(fault * sizeof(struct people_information));
 if (ps->data == NULL)
 {
  return;
 }
 ps->size = 0;
 ps->capacity = fault;
}

void checkcapacity(struct contact* ps)
{
 if (ps->size == ps->capacity)
 {
  struct people_information * ptr=realloc(ps->data, (ps->capacity + 2)*sizeof(struct people_information));
  if (ptr != NULL)
  {
   ps->data = ptr;
   ps->capacity += 2;
   printf("增容成功\n");
  }
  else
  {
   printf("增容失败\n");
  }
 }
}

void add(struct contact* ps)
{
 /*if (ps->size == max)
 {
  printf("通讯录已满，无法增加\n");
 }
 else
 {
  printf("请输入姓名:>");
  scanf("%s", ps->data[ps->size].name);
  printf("请输入电话:>");
  scanf("%s", ps->data[ps->size].telephone);
  printf("请输入性别:>");
  scanf("%s", ps->data[ps->size].sex);
  printf("请输入住址:>");
  scanf("%s", ps->data[ps->size].address);
  printf("请输入年龄:>");
  scanf("%d", &(ps->data[ps->size].age));
  ps->size++;
  printf("添加成功!\n");
 }*/
 //检测当前通讯录的容量
 checkcapacity(ps);
 printf("请输入姓名:>");
 scanf("%s", ps->data[ps->size].name);
 printf("请输入电话:>");
 scanf("%s", ps->data[ps->size].telephone);
 printf("请输入性别:>");
 scanf("%s", ps->data[ps->size].sex);
 printf("请输入住址:>");
 scanf("%s", ps->data[ps->size].address);
 printf("请输入年龄:>");
 scanf("%d", &(ps->data[ps->size].age));
 ps->size++;
 printf("添加成功!\n");
}

void show(const struct contact* ps)
{
 if (ps->size == 0)
 {
  printf("通讯录为空\n");
 }
 else
 {
  int i = 0;
  for (i = 0; i < ps->size; i++)
  {
   printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4s\n",
    "姓名", "电话", "性别", "住址", "年龄");
   printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4d\n",
    ps->data[i].name,
    ps->data[i].telephone,
    ps->data[i].sex,
    ps->data[i].address,
    ps->data[i].age);
  }
 }
}

static int FindByName(const struct contact* ps, char name[max_name])//冗余函数、查找函数
{
 //找到了返回名字所在元素的下标，找不到返回-1
 int i = 0;
 for (i = 0; i < ps->size; i++)
 {
  if (0 == strcmp(ps->data[i].name, name))
  {
   return i;
  }
 }
 return -1;
}

void my_delete(struct contact* ps)
{
 printf("请输入您要删除联系人的姓名:");
 char name[max_name] ;
 scanf("%s", name);
 int pos = FindByName(ps, name);
 if (pos==-1)
 {
  printf("您要删除的人不存在\n");
 }
 else
 {
  //删除数据
  int j = 0;
  for (j = pos; j < ps->size - 1; j++)
  {
   ps->data[j] = ps->data[j + 1];
  }
  ps->size--;
  printf("删除成功!\n");
 }
}

void search( const struct contact* ps)
{
 printf("请输入您要查找联系人的姓名:");
 char name[max_name];
 scanf("%s", name);
 int pos = FindByName(ps, name);
 if (pos == -1)
 {
  printf("您要查找的联系人不存在\n");
 }
 else
 {
  printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4s\n",
   "姓名", "电话", "性别", "住址", "年龄");
  printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4d\n",
   ps->data[pos].name,
   ps->data[pos].telephone,
   ps->data[pos].sex,
   ps->data[pos].address,
   ps->data[pos].age);
 }
}//完成

void modify(struct contact* ps)
{
 printf("请输入您要修改联系人的姓名:");
 char name[max_name];
 scanf("%s", name);
 int pos = FindByName(ps, name);
 if (pos == -1)
 {
  printf("您要修改的联系人不存在\n");
 }
 else
 {
  printf("新的姓名:");
  scanf("%s", ps->data[pos].name);
  printf("新的电话:");
  scanf("%s", ps->data[pos].telephone);
  printf("新的性别:");
  scanf("%s", ps->data[pos].sex);
  printf("新的住址:");
  scanf("%s", ps->data[pos].address);
  printf("新的年龄:");
  scanf("%d", &(ps->data[pos].age));

  printf("修改完成！\n");
 }
}

void sort(struct contact* ps)
{
 assert(ps);
 if (ps->size == 0)
 {
  printf("通讯录为空，无需排序\n");
 }
 else if (ps->size == 1)
 {
  printf("您的通讯录中只有一个人，无需排序\n");
  printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4s\n",
   "姓名", "电话", "性别", "住址", "年龄");
  printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4d\n",
   ps->data[0].name,
   ps->data[0].telephone,
   ps->data[0].sex,
   ps->data[0].address,
   ps->data[0].age);
 }
 else
 {
  int i = 0;
  for (i = 0; i < ps->size; i++)
  {
   int j = 0;
   for (j = 0; j < ps->size - i - 1; j++)
   {
    int ret = strcmp(ps->data[j].name, ps->data[j + 1].name);
    if (ret > 0)
    {
     char tmp1[max_name] = { 0 };
     char tmp2[max_telephone] = { 0 };
     char tmp3[max_sex] = { 0 };
     char tmp4[max_address] = { 0 };
     int  tmp5 = 0;

     strcpy(tmp1, ps->data[j].name);
     strcpy(tmp2, ps->data[j].telephone);
     strcpy(tmp3, ps->data[j].sex);
     strcpy(tmp4, ps->data[j].address);
     tmp5 = ps->data[j].age;//交给临时变量

     strcpy(ps->data[j].name, ps->data[j+1].name);
     strcpy(ps->data[j].telephone, ps->data[j+1].telephone);
     strcpy(ps->data[j].sex, ps->data[j+1].sex);
     strcpy(ps->data[j].address, ps->data[j+1].address);
     ps->data[j].age= ps->data[j+1].age;

     strcpy( ps->data[j + 1].name,tmp1);
     strcpy( ps->data[j + 1].telephone,tmp2);
     strcpy( ps->data[j + 1].sex,tmp3);
     strcpy( ps->data[j + 1].address,tmp4);
     ps->data[j + 1].age=tmp5;
    }
   }
  }
 }
 printf("排序完成！\n");
}

void destroy(struct contact* ps)
{
 free(ps->data);
 ps->data = NULL;
}

void save(struct contact* ps)
{
 FILE* pfwrite = fopen("contact.dat", "wb");
 if (pfwrite == NULL)
 {
  printf("%s\n", strerror(errno));
  return ;
 }
 //写通讯录中的数据到文件中

 int i = 0;
 for (i = 0; i < ps->size; i++)
 {
  fwrite(&(ps->data[i]), sizeof(struct people_information), 1, pfwrite);
 }

 fclose(pfwrite);
 pfwrite = NULL;
}

源文件test.c

#define  _CRT_SECURE_NO_WARNINGS 1

//功能：
//一、存放1000个系人信息，信息包括：姓名、电话、性别、住址、年龄
//二、增加联系人信息
//三、删除指定联系人信息
//四、查找联系人信息
//五、修改联系人信息
//六、显示全部联系人信息
//七、排序

#include<stdio.h>
#include"contact.h"

void menu()
{
 printf("******************************\n");
 printf("****1.add         2.delete****\n");
 printf("****3.search      4.modify****\n");
 printf("****5.show        6.sort  ****\n");
 printf("****7.save        0.exit  ****\n");
 printf("******************************\n");
}

int main()
{
 int input = 0;
 //创建通讯录
 struct contact con;//con就是通讯录，存放1000个信息


 //初始化通讯录
 initcontact(&con);
 do
 {
  menu();
  printf("请选择:>");
  scanf("%d", &input);
  switch (input)
  {
  case ADD:
   add(&con);//增加联系人信息
   break;
  case DEL:
   my_delete(&con);//删除指定联系人信息
   break;
  case SEARCH:
   search(&con);//查找联系人信息
   break;
  case MODIFY:
   modify(&con);//修改联系人信息
   break;
  case SHOW:
   show(&con);//显示全部联系人信息
   break;
  case SORT:
   sort(&con);//排序
   break;
  case EXIT:
   printf("退出通讯录\n");
   //销毁通讯录
   destroy(&con);
   break;
  case SAVE:
   save(&con);
  default:
   printf("选择错误\n");
   break;
  }
 } while(input);
 return 0;
}

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服务器之家。

原文链接：https://blog.csdn.net/qq_48690739/article/details/120277034