增(add),删(del),查(search),改(modify),展示(show),清除(clear),排序(sort),存储(save)
realloc函数用于修改一个原先已经分配的内存块的大小,可以使一块空间扩大或者缩小。当起始空间的地址为空,则等同于malloc。
void* realloc(void* ptr,size_t new_size);
fopen :FILE* fopen(const char* filename,const char* mode);
以mode(允许进入文件的类型)打开filename(文件名),通常与fclose配套使用
fwrite :size_t fwrite(const void* buffer,size_t size,size_t count,FILE* stream);
buffer:数据写入的缓冲区,size:写入数据的字节数,count:被写入数据的最大个数,stream:目标文件指针
perror:报告文件错误的函数,打印出一条用于解释errno当前错误代码的信息
#ifndef __CONTACT_H__
#define __CONTACT_H__
#include
#include
#include
#include
#define DEFAULT_SZ 3//默认大小
#define INC_SZ 2 //每次开辟的内存大小
#define NAME_MAX 20
#define SEX_MAX 10
#define TELE_MAX 12
#define ADDR_MAX 20
typedef struct PeoInfo //个人信息结构体
{
char name[NAME_MAX];
int age;
char sex[SEX_MAX];
char tele[TELE_MAX];
char addr[ADDR_MAX];
}PeoInfo;
typedef struct Contact //通讯录信息结构体
{
PeoInfo * data;
int sz; //有效个数
int capacity;//容量
}*pcontact;
enum Option //功能枚举
{
EXIT,
ADD,
DEL,
SEARCH,
MODIFY,
SHOW,
CLEAR,
SORT,
SAVE
};
enum Info //更改信息功能枚举
{
NAME = 1,
AGE,
SEX,
TELE,
ADDR
};
//接口
void InitContact(pcontact pc); //初始化
void DestoryContact(pcontact pc); //销毁
void AddContact(pcontact pc); //增加
void ShowContact(const pcontact pc); //展示
void DelContact(pcontact pc); //删除
int Find(pcontact pc, char name[]); //根据姓名查找
void SearchContact(pcontact pc); //查找
void ModifyContact(pcontact pc); //修改
void ClearContact(pcontact pc); //清除
void SortContact(pcontact pc); //排序
void SaveContact(pcontact pc); //保存
#endif //!__CONTACT_H__
#include "contact.h"
int CheckCapacity(pcontact pc) //增容
{
if (pc->sz == pc->capacity)
{
PeoInfo* ptr = (PeoInfo*)realloc(pc->data, (pc->capacity + INC_SZ) * sizeof(PeoInfo));
if (ptr != NULL)
{
pc->data = ptr;
pc->capacity += INC_SZ;
printf("增容成功\n");
return 1;
}
else
{
return 0;
}
}
return 1;
}
void LoadContact(pcontact pc) //加载文件中内容
{
//int i = 0;
FILE* pf = fopen("contact.txt","rb");
PeoInfo tmp = { 0 };
if (pf == NULL)
{
printf("没有文件夹\n");
perror("open file for write");
//exit(EXIT_FAILURE);
return;
}
//检查容量
while (fread(&tmp, sizeof(PeoInfo), 1, pf))
{
CheckCapacity(pc);
pc->data[pc->sz++] = tmp;
}
fclose(pf);
pf = NULL;
}
void InitContact(pcontact pc)
{
pc->data = (PeoInfo *)calloc(DEFAULT_SZ, sizeof(PeoInfo));
//判断是否开辟成功
if (pc->data == NULL)
{
printf("%s\n",strerror(errno));
return;
}
pc->sz = 0;
pc->capacity = DEFAULT_SZ;
LoadContact(pc);
}
void DestoryContact(pcontact pc)
{
free(pc->data);
pc->data = NULL;
pc->sz = 0;
pc->capacity = 0;
}
void AddContact(pcontact pc)
{
//增容
if( CheckCapacity(pc) == 0 )
{
return;
}
//增加信息
printf("请输入名字:>");
scanf("%s", pc->data[pc->sz].name);
printf("请输入年龄:>");
scanf("%d", &(pc->data[pc->sz].age));
printf("请输入性别:>");
scanf("%s", pc->data[pc->sz].sex);
printf("请输入电话:>");
scanf("%s", pc->data[pc->sz].tele);
printf("请输入地址:>");
scanf("%s", pc->data[pc->sz].addr);
printf("\n信息添加成功!\n");
pc->sz++;
}
void ShowContact(const pcontact pc)
{
int i = 0;
if (pc->sz == 0)
{
printf("没有信息,请添加\n");
return;
}
printf("%10s\t%5s\t%5s\t%15s\t%20s\n","name","age","sex","tele","addr");
for (i = 0; i < pc->sz; i++)
{
printf("%10s\t%5d\t%5s\t%15s\t%20s\n",pc->data[i].name, pc->data[i].age, pc->data[i].sex, pc->data[i].tele, pc->data[i].addr);
}
}
int Find(pcontact pc, char name[])
{
int i = 0;
for (i = 0; i < pc->sz; i++)
{
if (!strcmp(pc->data[i].name, name))
{
return i;
}
}
if (i == pc->sz)
{
return -1;
}
}
void DelContact(pcontact pc)
{
//判断是否为空
if (pc->sz == 0)
{
printf("通讯录为空,无法删除\n");
return;
}
//1.找到目标
int p = 0;
int pos = 0;
char name[NAME_MAX];
printf("请输入要删除的名字:>");
scanf("%s",name);
p = Find(pc,name);
if (p == -1)
{
printf("查无此人\n");
return;
}
//2.删除
for (pos = p; pos < pc->sz - 1; pos++)
{
pc->data[pos] = pc->data[pos + 1];
}
printf("删除成功!\n");
pc->sz--;
}
void SearchContact(pcontact pc)
{
char name[NAME_MAX];
printf("请输入要查找的名字:>");
scanf("%s",name);
int pos = Find(pc, name);
if (pos == -1)
{
printf("没有此人信息\n");
}
else
{
printf("%10s\t%5s\t%5s\t%15s\t%20s\n", "name", "age", "sex", "tele", "addr");
printf("%10s\t%5d\t%5s\t%15s\t%20s\n", pc->data[pos].name, pc->data[pos].age, pc->data[pos].sex, pc->data[pos].tele, pc->data[pos].addr);
}
}
void ModifyContact(pcontact pc)
{
//判断为空
if (pc->sz == 0)
{
printf("通讯录为空,无法修改\n");
return;
}
//姓名->find->修改内容->修改成功
char name[NAME_MAX];
printf("请输入要修改信息的人的名字:>");
scanf("%s",name);
int p = Find(pc,name);
if (p == -1)
{
printf("没有此人信息\n");
}
else
{
int input = 0;
char name[NAME_MAX];
int age = 0;
char sex[SEX_MAX];
char tele[TELE_MAX];
char addr[ADDR_MAX];
printf("%d", NAME);
printf("**** 1.name 2.age 3.sex 4.tele 5.addr ****\n");
printf("请选择修改信息:>");
scanf("%d",&input);
printf("请输入修改内容:>");
switch (input)
{
case NAME:
scanf("%s",&name);
strcpy(pc->data[p].name, name);
printf("修改成功\n");
break;
case AGE:
scanf("%d",&age);
pc->data[p].age = age;
printf("修改成功\n");
break;
case SEX:
scanf("%s", sex);
strcpy(pc->data[p].sex, sex);
printf("修改成功\n");
break;
case TELE:
scanf("%s", tele);
strcpy(pc->data[p].tele, tele);
printf("修改成功\n");
break;
case ADDR:
scanf("%s", addr);
strcpy(pc->data[p].addr, addr);
printf("修改成功\n");
break;
default:
printf("修改失败\n");
break;
}
}
}
void ClearContact(pcontact pc)
{
//pc->sz清零
pc->sz = 0;
printf("成功清空\n");
}
void SortContact(pcontact pc)
{
//为空不用排序
if (pc->sz == 0)
{
printf("通讯录为空,无法排序\n");
return;
}
//姓名,冒泡排序
int flag = 0;
for (int i = 0; i < pc->sz - 1; i++)
{
flag = 1;
for (int j = 0; j < pc->sz - i - 1; j++)
{
if (strcmp(pc->data[j].name, pc->data[j + 1].name) > 0)
{
struct PeoInfo tmp = pc->data[j];
pc->data[j] = pc->data[j + 1];
pc->data[j + 1] = tmp;
flag = 0;
}
}
if (flag == 1)
{
break;
}
else
{
printf("排序成功\n");
}
}
}
void SaveContact(pcontact pc)
{
int i = 0;
FILE* pf = fopen("contact.txt","wb");
if (pf == NULL)
{
perror("open file for write");
exit(EXIT_FAILURE);
}
for (i = 0; i < pc->sz; i++)
{
fwrite(pc->data+i,sizeof(PeoInfo),1,pf);
}
fclose(pf);
pf = NULL;
}
#include "contact.h"
void menu()
{
printf("********************************\n");
printf("**** 1. add 2. del ****\n");
printf("**** 3. search 4. modify ****\n");
printf("**** 5. show 6. clear ****\n");
printf("**** 7. sort 8. save ****\n");
printf("**** 0. exit ****\n");
printf("********************************\n");
}
void test()
{
struct Contact con;
InitContact(&con);
int input = 0;
do
{
menu();
printf("请选择:>");
scanf("%d",&input);
switch (input)
{
case ADD:
AddContact(&con);
break;
case DEL:
DelContact(&con);
break;
case SEARCH:
SearchContact(&con);
break;
case MODIFY:
ModifyContact(&con);
break;
case SHOW:
ShowContact(&con);
break;
case CLEAR:
ClearContact(&con);
break;
case SORT:
SortContact(&con);
break;
case SAVE: //将保存放到退出销毁之前
break;
case EXIT:
SaveContact(&con);
DestoryContact(&con);
break;
}
} while(input);
}
int main()
{
test();
return 0;
}