<span style="font-size:18px;">#include<stdio.h>

#include<string.h>

#include<stdlib.h>

#include<malloc.h>

#include<conio.h>

#define LEN sizeof(struct ab)

#define ZIP 7

#define PHONE 7

#define MAX 100

struct ab

{

	char name[10];

	char addr[10];

	char zip[ZIP];

	char phone[PHONE];

	struct ab *next;

};

struct ab *head;

void search(struct ab *head);

struct ab *add(struct ab *head);

struct ab *del(struct ab *head);

void alter(struct ab *head);

void print(struct ab *head);

void thefirst();

int n;</span>

<span style="font-size:18px;">#include"head.h"

void main()

{

	n=0;

	head=(struct ab *)malloc(LEN);

	thefirst();

}

void thefirst()

{

	char c;

	system("CLS");

	puts("**************************************");

	puts("                 通讯录               ");

	puts("                1、查询               ");

	puts("                2、加入               ");

	puts("                3、删除               ");

	puts("                4、改动               ");

	puts("                5、显示               ");

	puts("                6、返回               ");

	puts("**************************************");

	c=getch();

	system("CLS");

	switch(c)

	{

		case '1':search(head);break;

		case '2':head=add(head);thefirst();break;

		case '3':head=del(head);thefirst();break;

		case '4':alter(head);break;

		case '5':print(head);break;

		case '6':printf("BYE BYE!\n");

	}

}</span>

<span style="font-size:18px;">#include"head.h"

void search(struct ab *head)

{

	char str[10];

	struct ab *p;

	p=head;

	printf("please input the name you want to search!\n");

	scanf("%s",str);

	if(p==NULL)

	{

		printf("please input the information first!press any key to thefirst \n");

		getch();

		thefirst();

	}

	system("CLS");

	for(;p&&strcmp(str,p->name);p=p->next);

	if(p)

		printf("%10s\n%10s\n%10s\n%10s\n",p->name,p->addr,p->zip,p->phone);

	else

		printf("there is no information about the people you want!\n");

	getch();

	thefirst();

}</span>

<span style="font-size:18px;">#include"head.h"

struct ab *add(struct ab *head)

{

	struct ab *p1,*p2,*p3;

	char c[10];

	printf("please input the name!\n");

	scanf("%s",c);

	p1=head;

	if(n==0)

	{

		strcpy(p1->name,c);

		printf("please input the address!\n");

		scanf("%s",p1->addr);

		printf("please input the zip!\n");

		scanf("%s",p1->zip);

		printf("please input the phone!\n");

		scanf("%s",p1->phone);

		printf("%s\n",p1->phone);

		p1->next=NULL;

		n++;

	}

	else

	{

		p3=(struct ab *)malloc(LEN);

		strcpy(p3->name,c);

		printf("please input the address!\n");

		scanf("%s",p3->addr);

		printf("please input the zip!\n");

		scanf("%s",p3->zip);

		printf("please input the phone!\n");

		scanf("%s",p3->phone);

		if(strcmp(c,p1->name)<0)

		{

			head=p3;

			p3->next=p1;

		}

		else

		{

			for(;p1&&strcmp(c,p1->name)>0;p2=p1,p1=p1->next);

			if(p1==NULL)

			{

				p2->next=p3;

				p3->next=NULL;

			}

			else

			{

				p2->next=p3;

				p3->next=p1;

			}

			n++;

		}

	}

	return head;

}</span>

<span style="font-size:18px;">#include"head.h"

struct ab *del(struct ab *head)

{

	struct ab *p1,*p2;

	char c[10];

	p1=head;

	printf("please input the name you want to delete\n");

	scanf("%s",c);

	for(;p1&&strcmp(c,p1->name);p2=p1,p1=p1->next);

	if(p1==NULL)

	{

		printf("not find!press any key to thefirst \n");

		getch();

	}

	else if(p1==head)

		head=p1->next;

	else

		p2->next=p1->next;

	return head;

}</span>

<span style="font-size:18px;">#include"head.h"

void alter(struct ab *head)

{

	char str[10];

	struct ab *p;

	p=head;

	printf("please input the name you want to search!\n");

	scanf("%s",str);

	for(;p&&strcmp(str,p->name);p=p->next);

	if(p)

	{

		printf("please input the address!\n");

		scanf("%s",p->addr);

		printf("please input the zip!\n");

		scanf("%s",p->zip);

		printf("please input the phone!\n");

		scanf("%s",p->phone);

	}

	else

	{

		printf("not find!press any key to thefirst \n");

		getch();

	}

	thefirst();

}

</span>

<span style="font-size:18px;">#include"head.h"

void print(struct ab *head)

{

	struct ab *p;

	for(p=head;p;p=p->next)

	{

		printf("%10s%10s%10s%10s\n",p->name,p->addr,p->zip,p->phone);

	}

	getch();

	thefirst();

}</span>