指针实现通讯录

#ifndef __CONTACT_H__
#define __CONTACT_H__

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

typedef struct peole
{
char *name;
char *sex;
int  age;
char *tele;
char *addr;
}peo ;
typedef struct Contact
{
peo *dhb;
int count;
}Pcon ;

void menu();
void add_peo(Pcon *pcon);
void del_peo(Pcon *pcon);
void search_peo(Pcon *pcon);
void modify_peo(Pcon *pcon);
void show_peo(Pcon *pcon);
void clear_peo(Pcon *pcon);
int find(char *p, Pcon *pcon);

#endif

#include "contact.h"
#include<stdio.h>
#include<stdlib.h>
void menu()
{
printf("************************\n");
printf("*   1>add	   2>del   *\n");
printf("*	3>search   4>modify*\n");
printf("*	5>show	   6>clear *\n");
printf("************************\n");
}
int find(char *p, Pcon *pcon)
{
int i=0;
for(i=0;i<pcon->count;i++)
{
if(strcmp(p,(pcon->dhb[i].name))==0)
return i;
}
return -1;
}
void add_peo(Pcon *pcon)
{
if(pcon->count<1000)
{
printf("请输入名字：");
scanf("%s",pcon->dhb[pcon->count].name=(char *)malloc(20*sizeof(char)));
printf("请输入年龄：");
pcon->dhb[pcon->count].age=(int)malloc(2*sizeof(int));
scanf("%d",&(pcon->dhb[pcon->count].age));
printf("请输入性别：");
scanf("%s",pcon->dhb[pcon->count].sex=(char *)malloc(10*sizeof(char)));
printf("请输入电话：");
scanf("%s",pcon->dhb[pcon->count].tele=(char *)malloc(13*sizeof(char)));
printf("请输入地址：");
scanf("%s",pcon->dhb[pcon->count].addr=(char *)malloc(10*sizeof(char)));
pcon->count++;
printf("添加成功！");
}
else
{
printf("电话本已满！");
return;
}
}
void del_peo(Pcon *pcon)
{
int ret;
char *name=(char  *)malloc(20*sizeof(char)+1);
printf("请输入要删除人的名字:");
scanf("%s",name);
ret=find(name,pcon);
if(ret==-1)
{
printf("要删除的人不存在!");
return;
}
else
{
int index=0;
for(index=ret;index<pcon->count;index++)
{
pcon->dhb[index]=pcon->dhb[index+1];
}
pcon->count--;
}
}
void search_peo(Pcon *pcon)
{
int ret;
char * name=(char *)malloc(20*sizeof(char)+1);
printf("请输入要查找人的名字:");
scanf("%s",name);
ret=find(name,pcon);
if(ret!=-1)
{
printf("%12s ",pcon->dhb[ret].name);
printf("%12s ",pcon->dhb[ret].sex);
printf("%12d ",pcon->dhb[ret].age);
printf("%12s ",pcon->dhb[ret].tele);
printf("%12s ",pcon->dhb[ret].addr);
}
}
void modify_peo(Pcon *pcon)
{
int ret;
char *name=(char *)malloc(20*sizeof(char)+1);
printf("请输入要修改人的名字:");
scanf("%s",name);
ret=find(name,pcon);
if(ret!=-1)
{
printf("请输入名字:");
scanf("%s",pcon->dhb[ret].name);
printf("请输入性别:");
scanf("%s",pcon->dhb[ret].sex);
printf("请输入年龄:");
scanf("%d",&(pcon->dhb[ret].age));
printf("请输入电话:");
scanf("%s",(pcon->dhb[ret]).tele);
printf("请输入地址:");
scanf("%s",(pcon->dhb[ret]).addr);
}
}
void show_peo(Pcon *pcon)
{
int i=0;
for(i=0;i<pcon->count;i++)
{
printf("%12s ",pcon->dhb[i].name);
printf("%12s ",pcon->dhb[i].sex);
printf("%12d ",pcon->dhb[i].age);
printf("%12s ",pcon->dhb[i].tele);
printf("%12s ",pcon->dhb[i].addr);
}
printf("\n");
}
void clear_peo(Pcon *pcon)
{
pcon->count=0;
}

#include "contact.h"

int main()
{
Pcon my_contact;
int input = 1;
my_contact.dhb = (peo*)malloc(1000*sizeof(peo));
my_contact.count=0;//先赋个初值
while(input)
{
menu();
printf("请选择>");
scanf("%d",&input);
switch(input)
{
case 1:
add_peo(&my_contact);
break;
case 2:
del_peo(&my_contact);
break;
case 3:
search_peo(&my_contact);
break;
case 4:
modify_peo(&my_contact);
break;
case 5:
show_peo(&my_contact);
break;
case 6:
clear_peo(&my_contact);
break;
}
}
free(my_contact.dhb);
return 0;
}