#include<stdio.h>
#include<string.h>
#include<process.h>
#include<stdlib.h>
#include<windows.h>
struct student
{
	char id[12];
	char name[20];
	char sex[3];
	int age;
	char note[100];
	struct student *next;
};
void setposition(int x,int y)
{
    HANDLE win = GetStdHandle(STD_OUTPUT_HANDLE);
    COORD pos = {x,y};
    SetConsoleCursorPosition(win,pos);
}

void menu()
{
	system("cls");
	printf("\n\n\n\n\n");
	printf("\t\t|-------------班级档案管理系统----------------|\n");
	printf("\t\t|\t a.学生基本信息录入                   |\n");
	printf("\t\t|\t b.学生基本信息显示                   |\n");
	printf("\t\t|\t c.学生基本信息保存                   |\n");
	printf("\t\t|\t d.学生基本信息删除                   |\n");
	printf("\t\t|\t e.学生基本信息修改                   |\n");
	printf("\t\t|\t f.学生基本信息查询                   |\n");
	printf("\t\t|\t g.退出系统                           |\n");
	printf("\t\t|---------------------------------------------|\n"); 
 } 
int iCount;
struct student* Create()
{
	struct student* phead=NULL;
	struct student *pEnd,*pNew;
	iCount=0;
	pNew=(struct student*)malloc(sizeof(struct student));
	printf("\t\t\t######请输入学生基本信息######\n");
	printf("\t\t\t学号："); scanf("%s",pNew->id);
	printf("\t\t\t姓名；"); scanf("%s",pNew->name);
	printf("\t\t\t性别；"); scanf("%s",pNew->sex);
	printf("\t\t\t年龄；"); scanf("%d",&pNew->age);
	printf("\t\t\t备注：");scanf("%s",pNew->note);
			pNew->next=NULL;
	 		pEnd=pNew;
	 		phead=pNew;
	char key;
	printf("\t\t\t是否继续录入（y/任意）：\n");
	key = getch();
	 while(key=='y')
	 {
		pNew=(struct student*)malloc(sizeof(struct student));
		printf("\t\t\t#####请输入学生基本信息######\n");
		printf("\t\t\t学号："); scanf("%s",pNew->id);
		printf("\t\t\t姓名；"); scanf("%s",pNew->name);
		printf("\t\t\t性别；"); scanf("%s",pNew->sex);
		printf("\t\t\t年龄；"); scanf("%d",&pNew->age);
		printf("\t\t\t备注：");scanf("%s",pNew->note);
			pNew->next=NULL;
		 	pEnd->next=pNew;
		 	pEnd=pNew;
		printf("\t\t\t是否继续录入（y/任意）：\n");
		key = getch();
	 }
	 struct student *pTemp;
	pTemp=phead;
	FILE *fp;
	if((fp=fopen("D:\\学生信息.txt","a"))!=NULL)
	{
		while(pTemp!=NULL)
		{
			fprintf(fp,"%s ",pTemp->id);
			fprintf(fp,"%s ",pTemp->name);
			fprintf(fp,"%s ",pTemp->sex);
			fprintf(fp,"%d ",pTemp->age);
			fprintf(fp,"%s ",pTemp->note);
			pTemp=pTemp->next;
		}
	}		fclose(fp);
}
		
void Print()
{
	printf("\t\t\t******学生基本信息*******\n");
	FILE *fp;
	fp=fopen("D:\\学生信息.txt","r+");
	char a[4][100];
	int b;
	fscanf(fp,"%s%s%s%d%s",a[0],a[1],a[2],&b,a[3]);
	while(!feof(fp))
	{
		
		printf("学号：%s\n",a[0]);
		printf("姓名；%s\n",a[1]);
		printf("性别；%s\n",a[2]);
		printf("年龄；%d\n",b);
		printf("备注：%s\n",a[3]);
		fscanf(fp,"%s%s%s%d%s",a[0],a[1],a[2],&b,a[3]);
	}
	fclose(fp);	
	system("pause");
}

void Save(struct student *phead)
{
	struct student *pTemp;
	pTemp=phead;
	FILE *fp;
	if((fp=fopen("D:\\学生信息.txt","w"))!=NULL)
	{
		while(pTemp!=NULL)
		{
			fprintf(fp,"%s ",pTemp->id);
			fprintf(fp,"%s ",pTemp->name);
			fprintf(fp,"%s ",pTemp->sex);
			fprintf(fp,"%d ",pTemp->age);
			fprintf(fp,"%s ",pTemp->note);
			pTemp=pTemp->next;
		}
		fclose(fp);
		return;
	}
	else 
	printf("文件打开失败"); 
}
struct student* Delete()
{
	char s[20]; int i=1;
	struct student *pTemp,*pre; 
	FILE *fp;
	fp=fopen("D:\\学生信息.txt","r");
	struct student *phead=NULL;
	struct student *pEnd,*pNew,*pNow;
	pNew=(struct student*)malloc(sizeof(struct student));
	 fscanf(fp,"%s",pNew->id);
	 fscanf(fp,"%s",pNew->name);
	 fscanf(fp,"%s",pNew->sex);
	 fscanf(fp,"%d",&pNew->age);
	 fscanf(fp,"%s",pNew->note);
	 pNew->next=NULL;
	 pEnd=pNew;
	 phead=pNew;
	while(!feof(fp))
	{
	 pNew=(struct student*)malloc(sizeof(struct student));
	 fscanf(fp,"%s",pNew->id);
	 fscanf(fp,"%s",pNew->name);
	 fscanf(fp,"%s",pNew->sex);
	 fscanf(fp,"%d",&pNew->age);
	 fscanf(fp,"%s",pNew->note);
	 pNew->next=NULL;
	 pEnd->next=pNew;
	 pEnd=pNew;
	}
	pNow = phead;
	while(pNow->next->next!=NULL)
	{
		pNow = pNow->next;
	}
	pNow->next=NULL;
	pre=pTemp=phead;
	printf("\t\t\t请输入学号：");
	renew: scanf("%s",s);
	while(strcmp(pTemp->id,s))
	{
		i++;
		pTemp=pTemp->next;
		if(pTemp==NULL)
		{
			printf("\t\t\t学号输入有误！！！");
			printf("\t\t\t请重新输入："); 
		    goto renew; 
		}
	}
	if(i>1)
	{
		pre=pTemp=phead;
		int j;
		for(j=1;j<i;j++)
		{
			pre=pTemp;
			pTemp=pTemp->next;
		}
		pre->next=pTemp->next;
		free(pTemp);
	}
	else
	{
		pTemp=phead;
		phead=phead->next;
		free(pTemp);
	}
	fclose(fp);
	system("pause");
	return phead;
}
void search()
{
	struct student *pTemp; 
	FILE *fp;
	fp=fopen("D:\\学生信息.txt","r");
	struct student *phead=NULL;
	struct student *pEnd,*pNew,*pNow;
	pNew=(struct student*)malloc(sizeof(struct student));
	 fscanf(fp,"%s",pNew->id);
	 fscanf(fp,"%s",pNew->name);
	 fscanf(fp,"%s",pNew->sex);
	 fscanf(fp,"%d",&pNew->age);
	 fscanf(fp,"%s",pNew->note);
	 pNew->next=NULL;
	 pEnd=pNew;
	 phead=pNew;
	while(!feof(fp))
	{
	 pNew=(struct student*)malloc(sizeof(struct student));
	 fscanf(fp,"%s",pNew->id);
	 fscanf(fp,"%s",pNew->name);
	 fscanf(fp,"%s",pNew->sex);
	 fscanf(fp,"%d",&pNew->age);
	 fscanf(fp,"%s",pNew->note);
	 pNew->next=NULL;
	 pEnd->next=pNew;
	 pEnd=pNew;
	}
	pNow = phead;
	while(pNow->next->next!=NULL)
	{
		pNow = pNow->next;
	}
	pNow->next=NULL; 
	fclose(fp);
	int x;  char s[20];
	printf("\t\t\t请选择查询方式\n1.学号查询\n2.姓名查询\n3.性别查询\n4.年龄查询\n");
RE:	scanf("%d",&x);
	fflush(stdin);   //清空缓冲区 
	pTemp=phead;  int Y=0;
	switch(x)
	{
		case 1:
			printf("\t\t\t请输入学号：");
			break;
		case 2:
			printf("\t\t\t请输入姓名：");
			break; 
		case 3:
			printf("\t\t\t请输入性别：");
			break;
		case 4:
			printf("\t\t\t请输入年龄：");
			scanf("%d",&Y);
			goto jump;
			break;
		default:
			printf("\t\t\t输入有误！\n\t\t\t请重新选择：");
			goto RE; 
	}
	scanf("%s",s);
jump:	while(pTemp!=NULL)
	{
		switch(x)
	{
		case 1: 
		if(strcmp(s,pTemp->id)==0)
		{
			printf("学号：%s\n",pTemp->id);
			printf("姓名；%s\n",pTemp->name);
			printf("性别；%s\n",pTemp->sex);
			printf("年龄；%d\n",pTemp->age);
			printf("备注：%s\n",pTemp->note);
		}  break;
		case 2:
			if(strcmp(s,pTemp->name)==0)
			{
			printf("学号：%s\n",pTemp->id);
			printf("姓名；%s\n",pTemp->name);
			printf("性别；%s\n",pTemp->sex);
			printf("年龄；%d\n",pTemp->age);
			printf("备注：%s\n",pTemp->note);
			}  break;
		case 3:
			if(strcmp(s,pTemp->sex)==0)
			{
			printf("学号：%s\n",pTemp->id);
			printf("姓名；%s\n",pTemp->name);
			printf("性别；%s\n",pTemp->sex);
			printf("年龄；%d\n",pTemp->age);
			printf("备注：%s\n",pTemp->note);
			}
		case 4:  
			if(Y==pTemp->age)
			{
			printf("学号：%s\n",pTemp->id);
			printf("姓名；%s\n",pTemp->name);
			printf("性别；%s\n",pTemp->sex);
			printf("年龄；%d\n",pTemp->age);
			printf("备注：%s\n",pTemp->note);
			}  break;
			
			
	} 
	pTemp=pTemp->next;
	}
	system("pause");
	
}
struct student* Change()
{
	struct student *pTemp; 
	FILE *fp;
	fp=fopen("D:\\学生信息.txt","r");
	struct student *phead=NULL;
	struct student *pEnd,*pNew,*pNow;
	pNew=(struct student*)malloc(sizeof(struct student));
	 fscanf(fp,"%s",pNew->id);
	 fscanf(fp,"%s",pNew->name);
	 fscanf(fp,"%s",pNew->sex);
	 fscanf(fp,"%d",&pNew->age);
	 fscanf(fp,"%s",pNew->note);
	 pNew->next=NULL;
	 pEnd=pNew;
	 phead=pNew;
	while(!feof(fp))
	{
	 pNew=(struct student*)malloc(sizeof(struct student));
	 fscanf(fp,"%s",pNew->id);
	 fscanf(fp,"%s",pNew->name);
	 fscanf(fp,"%s",pNew->sex);
	 fscanf(fp,"%d",&pNew->age);
	 fscanf(fp,"%s",pNew->note);
	 pNew->next=NULL;
	 pEnd->next=pNew;
	 pEnd=pNew;
	}
	pNow = phead;
	while(pNow->next->next!=NULL)
	{
		pNow = pNow->next;
	}
	pNow->next=NULL;
	pTemp=phead;
	char s[20];
	printf("\t\t\t请输入要修改学生的学号：");
	scanf("%s",s);
	while(pTemp!=NULL)
	{
		if(strcmp(s,pTemp->id)==0)
		{
			printf("\t\t\t学号："); scanf("%s",pTemp->id);
			printf("\t\t\t姓名；"); scanf("%s",pTemp->name);
			printf("\t\t\t性别；"); scanf("%s",pTemp->sex);
			printf("\t\t\t年龄；"); scanf("%d",&pTemp->age);
			printf("\t\t\t备注："); scanf("%s",pTemp->note);
			break;
		}
		pTemp=pTemp->next;
	 }
	 system("pause");
	 fclose(fp); 
	 return phead;
	 
 } 

int main()
{
	system("mode con cols=80 lines=30");
	system("color F5");
	char x=0;
	char m[7]; 
	struct student *head;
	Re: 
	setposition(40,14);
	printf("请输入密码：                                                           ");
	setposition(39,13);
	printf("*********************");
	setposition(39,15);
	printf("*********************");
	setposition(39,14);
	printf("*");
	setposition(59,14);
	printf("*");
	setposition(51,14);
	scanf("%s",m);
	if(strcmp(m,"aaaaaa")==0)
	{
			
			while(1)
	{
		
		
		if(x=='g')
		exit(0);
		switch(x)
		{
			case'a':
			Create();
			break;
			case'b':
			Print();
			break;
			case'c':
			Save(head);
			break;
			case'd':
			head=Delete();
			break;
			case'e':
				head=Change();
				break;
			case'f':
			search();
			break;	
		}
		menu();	
			printf("\t\t\t请选择你要执行的操作：");
			scanf("%c",&x);
	}
	}
	else
	{
		printf("\t\t\t密码错误，请重试！！！\n");
		goto Re; 
	}
	 
	return 0;
}