实现一个通讯录；
通讯录可以用来存储1000个人的信息，每个人的信息包括：
姓名、性别、年龄、电话、住址

提供方法：
1. 添加联系人信息
2. 删除指定联系人信息
3. 查找指定联系人信息
4. 修改指定联系人信息

5. 显示所有联系人信息
6. 清空所有联系人

#include"contact.h"   int add_contact(pContact pcon) {     if(pcon->count_user ==MAX) 	{ 		printf("通讯录已满！"); 		return -1; 	} 	else 	{ 	printf("请输入名字："); 	scanf("%s",pcon->people[pcon->count_user].name );     printf("请输入性别："); 	scanf("%s",pcon->people[pcon->count_user].sex);     printf("请输入年龄："); 	scanf("%d",&pcon->people[pcon->count_user].age);     printf("请输入电话："); 	scanf("%s",pcon->people[pcon->count_user].tel);     printf("请输入地址："); 	scanf("%s",pcon->people[pcon->count_user].add ); 	pcon->count_user++;     } 	return 0;      } int del_contact(pContact pcon) { 	int i=0; 	 int rel=search_contact(pcon); 		 if(rel!=-1) 		 { 	         for(i=rel;i<pcon->count_user-1;i++) 			 { 				 pcon->people[i] =pcon->people [i+1]; 			 }              pcon->count_user--; 		     return 1; 		 } 		 else 		 { 		     printf("不存在！"); 		     return -1; 		 } } int  search_contact(pContact pcon) { 	int i;     char name[NAME_LIGHT]; 	printf("请输入要查找的名字："); 	scanf("%s",name);  	for(i=0;i<pcon->count_user;i++) 	{ 		if(strcmp(pcon->people[i].name ,name)==0) 		{           printf("\tname\tsex\tage\ttel\tadd\n");            printf("%10s",pcon->people[i].name ); 	       printf("%5s",pcon->people[i].sex); 	       printf("%10d",pcon->people[i].age ); 	       printf("%10s",pcon->people[i].tel ); 	       printf("%10s\n",pcon->people[i].add ); 			return 1; 		} 	}      return -1; }  int modify_contact(pContact pcon) {     int rel=search_contact(pcon); 	if(rel!=-1) 	{ 	    printf("请输入姓名："); 		scanf("%s",pcon->people[pcon->count_user ].name); 		printf("请输入性别："); 		scanf("%s",pcon->people[pcon->count_user].sex ); 		printf("请输入年龄："); 		scanf("%d",&pcon->people[pcon->count_user].age); 		printf("请输入电话："); 		scanf("%s",pcon->people[pcon->count_user ].tel ); 		printf("请输入地址："); 		scanf("%s",pcon->people[pcon->count_user ].add );         return 1; 	} 	else 	{ 	printf("输入错误！"); 	return -1;  	} }  int show_contact(pContact pcon) {    int i;    printf("\tname\tsex\tage\ttel\tadd\n");    for(i=0;i< pcon->count_user;i++)    {        printf("%10s",pcon->people[i].name ); 	   printf("%5s",pcon->people[i].sex); 	   printf("%10d",pcon->people[i].age ); 	   printf("%10s",pcon->people[i].tel ); 	   printf("%10s\n",pcon->people[i].add ); 	       }     printf("\n");    return 0; }  int clear_contact(pContact pcon) {      pcon->count_user =0; 	 return 1;  }

#ifndef CONTACT_H #define CONTACT_H  #endif  #include<stdio.h> #include<string.h> #include<stdlib.h>  #define NAME_LIGHT 10 #define SEX_LIGHT   4 #define TEL_LIGHT  20 #define ADD_LIGHT  30 #define MAX 1000  struct peopleInfo {        char name[NAME_LIGHT]; 	   char sex[SEX_LIGHT]; 	   int  age; 	   char tel[TEL_LIGHT]; 	   char add[ADD_LIGHT];  };  struct contact   {        struct peopleInfo people[MAX]; 	   int count_user;  }; typedef struct contact  *pContact;  int add_contact(pContact pcon); int del_contact(pContact pcon); int search_contact(pContact pcon); int modify_contact(pContact pcon); int show_contact(pContact pcon); int clear_contact(pContact pcon); 

#include"contact.h" int main() {     int n; 	struct contact people;     people.count_user=0; 	printf("请输入一个数："); 	scanf("%d",&n); 	switch(n) 	{ 	case 1: 		add_contact(&people); 		break; 	case 2: 		del_contact(&people); 		break; 	case 3: 		search_contact(&people); 		break; 	case 4: 		clear_contact(&people); 		break; 	case 5: 		modify_contact(&people); 		break; 	case 6: 		show_contact(&people); 		break; 	default: 		printf("输入错误！"); 		break; 	}     	return 0;  }