malloc函数etc知识链接
https://blog.csdn.net/weixin_41892460/article/details/82666228
输入输出函数知识链接
https://blog.csdn.net/weixin_41892460/article/details/82689266
头文件
#ifndef __CONTACT_H__
#define __CONTACT_H__
#include <stdio.h>
#include <stdlib.h>
#include<Windows.h>
#include<errno.h>
enum Option
{
EXIT,
ADD,
DEL,
SEARCH,
MODIFY,
SHOW,
SORT,
EMPTY
};
#define FileName "contact.txt"
#define CAP 3
#define MAX_NAME 20
#define MAX_SEX 5
#define MAX_ADDR 30
#define MAX 1000
typedef struct PeoInfo
{
char name[MAX_NAME];
short age;
char sex[MAX_SEX];
char addr[MAX_ADDR];
}PeoInfo, *pPeoInfo;
//静态
typedef struct Contact
{
pPeoInfo data;
unsigned int sz;
int capacity;
}Contact, *pContact;
void CheckCapacity(pContact pc);
void LoadContact(pContact pc);
void InitContact(pContact pc);
void AddContact(pContact pc);
void ShowContact(pContact pc);
void DelContact(pContact pc);
void DestoryContact(pContact pc);
void SearchContact(pContact pc);
void EmptyContact(pContact pc);
void ModifyContact(pContact pc);
void SortContact(pContact pc);
#endifContact.c
#define _CRT_SECURE_NO_WARNINGS 1
#include "Contact.h"
void LoadContact(pContact pc)
{
FILE *pfRead = fopen(FileName, "r");
PeoInfo tmp = { 0 };
if (pfRead == NULL)
{
perror("open file for read");
exit(EXIT_FAILURE);
}
//加载
while (fread(&tmp, sizeof(PeoInfo), 1, pfRead))
{
CheckCapacity(pc);
pc->data[pc->sz] = tmp;
pc->sz++;
}
fclose(pfRead);
pfRead = NULL;
}
void InitContact(pContact pc)
{
pc->sz = 0;
pc->capacity = CAP;
pc->data = (pPeoInfo)calloc(pc->capacity,sizeof(PeoInfo));//参数：元素个数，元素大小
if (pc->data == NULL)
{
printf("%s\n", strerror(errno));
exit(EXIT_FAILURE);
}
//加载文件信息
LoadContact(pc);
}
void CheckCapacity(pContact pc)
{
if (pc->capacity == pc->sz)
{
pPeoInfo ptr = realloc(pc->data, (pc->capacity += 2)*sizeof(PeoInfo));
if (ptr != NULL)
{
pc->data = ptr;
}
printf("增容成功\n");
}
}
void AddContact(pContact pc)
{
CheckCapacity(pc);
if (pc->sz == MAX)
{
printf("通讯录已经满了\n");
return;
}
printf("请输入名字:>");
scanf("%s", (pc->data[pc->sz].name));
printf("请输入性别:>");
scanf("%s", (pc->data[pc->sz].sex));
printf("请输入年龄:>");
scanf("%d", &(pc->data[pc->sz].age));
printf("请输入地址:>");
scanf("%s", (pc->data[pc->sz].addr));
pc->sz++;
printf("添加成功\n");
}
void ShowContact(pContact pc)
{
unsigned int i = 0;
printf("%10s\t%5s\t%5s\t%10s\t\n", "name", "age", "sex", "addr");
for (i = 0; i < pc->sz; i++)
{
printf("%10s\t%5d\t%5s\t%10s\t\n",
pc->data[i].name,
pc->data[i].age,
pc->data[i].sex,
pc->data[i].addr);
}
}
static int Find(pContact pc, char name[])
{
unsigned int i = 0;
for (i = 0; i < pc->sz; i++)
{
if (strcmp(name, pc->data[i].name) == 0)
{
return i;
}
}
return -1;
}
void DelContact(pContact pc)
{
unsigned int i;
int pos;
char name[MAX_NAME] = { 0 };
if (pc->sz == 0)
{
printf("没有可删信息\n");
return;
}
printf("请输入要删除的姓名");
scanf("%s", name);
pos = Find(pc, name);
if (pos == -1)
{
printf("删除的用户不存在\n");
return;
}
else
{
for (i = pos; i <pc->sz - 1; i++)
{
pc->data[i] = pc->data[i + 1];
}
pc->sz--;
printf("删除成功\n");
}
}
void SaveContact(pContact pc)
{
FILE* pfWrite = fopen(FileName, "w");
if (pfWrite == NULL)
{
perror("open file for write");
exit(EXIT_FAILURE);
}
unsigned int i = 0;
for (i = 0; i < pc->sz; i++)
{
fwrite(pc->data + i, sizeof(PeoInfo), 1, pfWrite);
}
fclose(pfWrite);
pfWrite = NULL;
}
void DestoryContact(pContact pc)
{
//保存文件
SaveContact(pc);
//销毁
free(pc->data);
pc->data = NULL;
pc->capacity = 0;
pc->sz = 0;
printf("销毁通讯录\n");
}
void EmptyContact(pContact pc)
{
printf(" \n");
memset(pc->data, 0, sizeof(pc->data));
pc->sz = 0;
printf("已经清空\n");
}
void SearchContact(pContact pc)
{
unsigned int i;
char name[MAX_NAME] = { 0 };
if (pc->sz == 0)
{
printf("没有搜索到信息\n");
return;
}
printf("请输入要查找的姓名");
scanf("%s", name);
for (i = 0; i < pc->sz; i++)
{
if (strcmp(name, pc->data[i].name) == 0)
{
printf("查找成功\n");
printf("%10s\t%5d\t%5s\t%10s\t\n",
pc->data[i].name,
pc->data[i].age,
pc->data[i].sex,
pc->data[i].addr);
}
}
}
void ModifyContact(pContact pc)
{
int pos;
char name[MAX_NAME] = { 0 };
if (pc->sz == 0)
{
printf("没有可修改信息\n");
return;
}
printf("请输入要修改的姓名");
scanf("%s", name);
pos = Find(pc, name);
if (pos == -1)
{
printf("修改的用户不存在\n");
return;
}
else
{
printf("请输入名字:>");
scanf("%s", (pc->data[pos].name));
printf("请输入性别:>");
scanf("%s", (pc->data[pos].sex));
printf("请输入年龄:>");
scanf("%d", &(pc->data[pos].age));
printf("请输入地址:>");
scanf("%s", (pc->data[pos].addr));
printf("修改成功\n");
}
}
void SortContact(pContact pc)
{
unsigned int i = 0;
unsigned int j = 0;
if (pc->sz == 0)
{
printf("没有可排序信息\n");
return;
}
for (i = 0; i < pc->sz - 1; i++)
{
for (j = 0; j < pc->sz - 1 - i; j++)
{
if (strcmp((pc->data[j].name), (pc->data[j + 1].name))>0)//strcmp str1>str2则为正数
{
PeoInfo t;
t = pc->data[j];
pc->data[j] = pc->data[j + 1];
pc->data[j + 1] = t;
}
}
}
}
test.c
#include "Contact.h"
#pragma warning(disable:4996)
void menu()
{
printf("**********************************\n");
printf("******** 1.add 2.del **********\n");
printf("******** 3.search 4.modify ******\n");
printf("******** 5.show 6.sort ********\n");
printf("******** 7.empty 0.exit ********\n");
}
int main()
{
int input = 0;
struct Contact my_son;
InitContact(&my_son);
do
{
menu();
printf("请选择>");
scanf_s("%d", &input);
switch (input)
{
case ADD:
AddContact(&my_son);
break;
case DEL:
DelContact(&my_son);
break;
case SHOW:
ShowContact(&my_son);
break;
case EXIT:
DestoryContact(&my_son);
break;
default:
printf("选择错误.");
break;
}
} while (input);
system("pause");
return 0;
}