Linux下的C语言编程——文件存储链表实现的通讯录



研究了好久才把文件加进去，主要是自己太菜了，希望能给大家一点启发！

#include 
#include 
#include 

#define N 15

struct book// 瀹氫箟缁撴瀯浣?{
	char name[N];//濮撳悕
	char sex[N];// 鎬у埆
	char number[N];//鍙风爜
	char QQ[N];// qq
	char addr[2*N];// 鍦板潃
//	struct contact *next;
};

typedef struct book Book;
//typedef struct contact *Link;

struct contact
{
	Book content;
	struct contact *next;
};

typedef struct contact Contact;
typedef struct contact *Link;

Link creat()
{
	Link p;

	p = (Link)malloc(sizeof(Contact));

	if(!(p))
	{
		printf("malloc error\n");
		exit(-1);
	}
	p->next = NULL;

	return p;
}

void openfile(Link *head)
{
	FILE *fp;
	Book content;
	Link p1;
	Link p2;

	p1 = *head;

	if((fp = fopen("contact.txt","r+")) == NULL)
	{
		printf("can not open the file!\n");
		exit(-1);
	}
	else
	{
		while(fread(&content,sizeof(content),1,fp) == 1)
		{
			p2 = creat();
			p2->content = content;
			p1->next = p2;
			p1 = p2;
		}
	}
}

void savefile(Link head)
{
	FILE *fp;

	Link p;
	Book content;

//	remove("contact.txt");

	if((fp = fopen("contact.txt","w+")) == NULL)
	{
		printf("can not open the file!\n");
		exit(-1);
	}

	p = head->next;

	while(p != NULL)
	{
		fwrite(&p->content,sizeof(content),1,fp);
		p = p->next;
	}
}

void creat_list(Link *head)//鍒涘缓閾捐〃
{
	*head = (Link)malloc(sizeof(Contact));

	if(!(*head))
	{
		printf("malloc error!\n");
		exit(-1);
	}

	(*head)->next = NULL;
}

int len_list(Link *head)//璁＄畻閾捐〃闀垮害
{
	Link temp = (*head)->next;
	int len = 0;
	int i;

	while(temp != NULL)
	{
		temp = temp->next;
		len++;
	}

	return len;
}

void input(Link p)//杈撳叆鑺傜偣鍊?{
	printf("\n璇疯緭鍏ヨ仈绯讳汉濮撳悕\n");
	scanf("%s",p->content.name);
	
	printf("璇疯緭鍏ヨ仈绯讳汉鎬у埆\n");
	scanf("%s",p->content.sex);
	
	printf("璇疯緭鍏ヨ仈绯讳汉鐢佃瘽\n");
	scanf("%s",p->content.number);
	
	printf("璇疯緭鍏ヨ仈绯讳汉QQ\n");
	scanf("%s",p->content.QQ);
	
	printf("璇疯緭鍏ヨ仈绯讳汉鍦板潃\n");
	scanf("%s",p->content.addr);
}

void output(Link p)//杈撳嚭鑺傜偣鍊?{	
	printf("濮撳悕: %s",p->content.name);
	printf("\n");
	
	printf("鎬у埆: %s",p->content.sex);
	printf("\n");
	
	printf("鐢佃瘽: %s",p->content.number);
	printf("\n");
	
	printf("QQ鍙? %s",p->content.QQ);
	printf("\n");
	
	printf("鍦板潃: %s",p->content.addr);
	printf("\n");
}

void insert_tail(Link *head)//灏炬彃娉曞缓绔嬮摼琛?{
	Link temp = *head;
	Link p;
	int n;
	int i;
	int m;

	printf("input the number you want to add!\n");
	scanf("%d",&n);

	for(i = 0; i < n; i++)
	{
		p = (Link)malloc(sizeof(Contact));

		if(!p)
		{
			printf("malloc error!\n");
			exit(-1);
		}

		input(p);

		while(temp->next != NULL)
		{
			temp = temp->next;
		}

		p->next = NULL;
		temp->next = p;

	}

}

void display(Link head)//閬嶅巻閾捐〃
{
	Link temp  = head->next;

	if(head->next == NULL)
	{
		printf("contact error!\n");
	}

	while(temp != NULL)
	{
		printf("濮撳悕: %s",temp->content.name);
		printf("\n");
	
		printf("鎬у埆: %s",temp->content.sex);
		printf("\n");
	
		printf("鐢佃瘽: %s",temp->content.number);
		printf("\n");
	
		printf("QQ鍙? %s",temp->content.QQ);
		printf("\n");
	
		printf("鍦板潃: %s",temp->content.addr);
		printf("\n");

		temp = temp->next;
	}
}

void find_name(Link head)//鎸夊鍚嶆煡鎵?{
	Link temp = head->next;

	char str[N];
	int i = 0;
	
	printf("input the name you want to search!\n");
	scanf("%s",str);
	
	if(head->next == NULL)
	{
		printf("contact empty!\n");
	}

	while(temp != NULL)
	{
		if(strcmp(temp->content.name,str) == 0)
		{
			output(temp);
			i++;
		}
		temp = temp->next;
	}

	if(i == 0)
	{
		printf("no such persion!\n");
	}
}

void find_number(Link head)//鎸夊彿鐮佹煡鎵?{
	Link temp = head->next;

	char str[N];
	int i = 0;
	
	printf("input the number you want to search!\n");
	scanf("%s",str);
	
	if(head->next == NULL)
	{
		printf("contact empty!\n");
	}

	while(temp != NULL)
	{
		if(strcmp(temp->content.number,str) == 0)
		{
			output(temp);
			i++;
		}
		temp = temp->next;
	}

	if(i == 0)
	{
		printf("no such persion!\n");
	}
}

void find_qq(Link head)//鎸塹q鍙锋煡鎵?{
	Link temp = head->next;

	char str[N];
	int i = 0;
	
	printf("input the QQ you want to search!\n");
	scanf("%s",str);
	
	if(head->next == NULL)
	{
		printf("contact empty!\n");
	}

	while(temp != NULL)
	{
		if(strcmp(temp->content.QQ,str) == 0)
		{
			output(temp);
			i++;
		}
		temp = temp->next;
	}

	if(i == 0)
	{
		printf("no such persion!\n");
	}
}

void find_addr(Link head)//鎸夊湴鍧€鏌ユ壘
{
	Link temp = head->next;

	char str[2*N];
	int i = 0;
	
	printf("input the addr you want to search!\n");
	scanf("%s",str);
	
	if(head->next == NULL)
	{
		printf("contact empty!\n");
	}

	while(temp != NULL)
	{
		if(strcmp(temp->content.addr,str) == 0)
		{
			output(temp);
			i++;
		}
		temp = temp->next;
	}

	if(i == 0)
	{
		printf("no such persion!\n");
	}
}

void search_node(Link head)//鏌ユ壘鍑芥暟
{
	//Link temp = head->next;
	
	int n;
	char pos;


	printf("\n1:鎸夊鍚嶆煡鎵綷n2:鎸夌數璇濇煡鎵綷n3:鎸塓Q鍙锋煡鎵綷n4:鎸夊湴鍧€鏌ユ壘\n");

	printf("璇疯緭鍏ヤ綘鐨勯€夋嫨!\n");
	scanf("%d",&n);
	switch(n)
	{
		case 1:
			find_name(head);
				
			while(1)
			{
				printf("鏄惁缁х画鏌ユ壘[Y/N]?");
				scanf("%c",pos);

				if(pos == 'y' || pos == 'Y')
				{
					find_name(head);
				}
				else
				{
					break;
				}
			}
			break;
		case 2:
			find_number(head);
				
			while(1)
			{
				printf("鏄惁缁х画鏌ユ壘[Y/N]?");
				scanf("%c",pos);

				if(pos == 'y' || pos == 'Y')
				{
					find_number(head);
				}
				else
				{
					break;
				}
			}
			break;
		case 3:
			find_qq(head);
			
			while(1)
			{
				printf("鏄惁缁х画鏌ユ壘[Y/N]?");
				scanf("%c",pos);

				if(pos == 'y' || pos == 'Y')
				{
					find_qq(head);
				}
				else
				{
					break;
				}
			}
			break;
		case 4:
			find_addr(head);
			
			while(1)
			{
				printf("鏄惁缁х画鏌ユ壘[Y/N]?");
				scanf("%c",pos);

				if(pos == 'y' || pos == 'Y')
				{
					find_addr(head);
				}
				else
				{
					break;
				}
			}
			break;
		default:
			break;
	}
}

void delete_node(Link *head)//鍒犻櫎鍑芥暟
{
	Link temp = (*head)->next;
	Link p = *head;
	char str[N];
	char str1[N];
	int i = 0;

	printf("input the name you want to delete!\n");
	scanf("%s",str);

	while(temp != NULL)
	{
		if(strcmp(temp->content.name,str) == 0)
		{
			output(temp);
			i++;
		}

		temp = temp->next;
	}

	temp = (*head)->next;

	if(i == 0)
	{
		printf("no such persion!\n");
	}
	else if(i == 1)
		{
			while((strcmp(temp->content.name,str) != 0) && temp->next != NULL)
			{
				p = temp;
				temp = temp->next;
			}

			if(strcmp(temp->content.name,str) == 0)
			{
				p->next = temp->next;
				free(temp);
			}
		}
	else
	{
		printf("input the number you want to delete!\n");
		scanf("%s",str1);
		
		while((strcmp(temp->content.number,str1) != 0) && temp->next != NULL)
			{
				p = temp;
				temp = temp->next;
			}

			if(strcmp(temp->content.number,str1) == 0)
			{
				p->next = temp->next;
				free(temp);
			}
	}

//	len_list(head);

}

void alter_name(Link p)//淇敼濮撳悕
{
	printf("璇疯緭鍏ヤ綘鎯虫敼鎴愮殑鍚嶅瓧!\n");
	scanf("%s",p->content.name);
	output(p);
}

void alter_sex(Link p)// 淇敼鎬у埆
{
	printf("璇疯緭鍏ヤ綘鎯虫敼鎴愮殑鎬у埆!\n");
	scanf("%s",p->content.sex);
	output(p);
}

void alter_number(Link p)//淇敼鍙风爜
{
	printf("璇疯緭鍏ヤ綘鎯虫敼鎴愮殑鍙风爜!\n");
	scanf("%s",p->content.number);
	output(p);
}
void alter_qq(Link p)// 淇敼qq
{
	printf("璇疯緭鍏ヤ綘鎯虫敼鎴愮殑QQ!\n");
	scanf("%s",p->content.QQ);
	output(p);
}

void alter_addr(Link p)// 淇敼鍦板潃
{
	printf("璇疯緭鍏ヤ綘鎯虫敼鎴愮殑鍦板潃!\n");
	scanf("%s",p->content.addr);
	output(p);
}

void atler(Link head)// 淇敼鍑芥暟
{
	int n;
	char str[2*N];
	Link temp = head->next;

	printf("input the name you want to atler!\n");
	scanf("%s",str);

	while((strcmp(temp->content.name,str) != 0) && temp->next != NULL)
	{
		temp = temp->next;
	}

	if(strcmp(temp->content.name,str) == 0)
	{
		output(temp);
		printf("\n1:淇敼濮撳悕\n2:淇敼鎬у埆\n3:淇敼鍙风爜\n4:淇敼QQ鍙穃n5:淇敼鍦板潃\n");
		printf("input your choic!\n");
		scanf("%d",&n);

		switch(n)
		{
			case 1:
				alter_name(temp);
				break;
			case 2:
				alter_sex(temp);
				break;
			case 3:
				alter_number(temp);
				break;
			case 4:
				alter_qq(temp);
				break;
			case 5:
				alter_addr(temp);
				break;
			default:
				printf("input error!\n");
				break;
		}
	}

}

void clear(Link *head)// 娓呯┖閾捐〃
{
	Link temp = (*head)->next;

	while(temp != NULL)
	{
		(*head)->next = (temp->next);
		free(temp);
		temp = (*head)->next;
	}

	(*head)->next = NULL;
}

int main()
{
	Link head;

	int n;

	char pos[5];
	
	creat_list(&head);

	openfile(&head);

	system("clear");
	while(1)
	{
		printf("\n1:鍒涘缓閫氳褰昞n2閬嶅巻閫氳褰?\n3:鏌ユ壘鑱旂郴浜篭n4:鍒犻櫎鑱旂郴浜篭n5:娣诲姞鑱旂郴浜篭n6:淇敼鑱旂郴浜篭n0:閫€鍑篭n");
		printf("璇疯緭鍏ヤ綘鐨勯€夋嫨:\n");
		scanf("%d",&n);
		
		switch(n)
		{
			case 1:
				insert_tail(&head);
				break;
			case 2:
				display(head);
				break;
			case 3:
				search_node(head);
				break;
			case 4:
				delete_node(&head);
				
				while(1)
				{
					printf("鏄惁缁х画鍒犻櫎[Y/N]?");
					scanf("%s",pos);

					if(strcmp(pos,"y"))
					{
						delete_node(&head);
					}
					else
					{
						break;
					}
				}
				break;
			case 5:
				insert_tail(&head);
				while(1)
				{
					printf("鏄惁缁х画娣诲姞[Y/N]?");
					scanf("%s",pos);

					if(strcmp(pos,"y") == 0)
					{
						insert_tail(&head);
					}
					else
					{
						break;
					}
				}
				break;
			case 6:
				atler(head);
				while(1)
				{
					printf("鏄惁缁х画淇敼[Y/N]?");
					scanf("%s",pos);

					if(strcmp(pos,"y") == 0)
					{
						atler(head);
					}
					else
					{
						break;
					}
				}
				break;
			case 7:
				clear(&head);
				break;
			case 0:
				savefile(head);
				exit(0);
				break;
			default:
				printf("input error!\n");
				break;
		}
	}

    return 0;
}