C语言实现通讯录

<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、添加               ");
	puts("                3、删除               ");
	puts("                4、修改               ");
	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>