zzq.txt

、课设内容及步骤 1. 消化课设算法思想及样本程序 给出对应模块（函数）的流程图 2. 编制 建立、删除、打开、关闭、读、写 函数 3. 准备调试数据（至少两个用户

#include <stdio.h>
#include<string.h>
#include<malloc.h>

struct linkf
     {char username[16];
      struct links *next;
     };
 
struct linkr
     {char name[16];
      int sex;
      struct linkr *next;
     };
 
struct links
     {char filename[16];
      struct linkr *headlink;
      int length;
      struct links *next;
     };
 
struct linkt
     {char filename[16];
      int flag;
      int length;
      struct linkr *headlink;
      struct linkt *next;
     };
 
struct linkf mfd[5];
struct links *ufd,*p2,*q2;
struct linkr *p,*q;
struct linkt *afd,*p3,*q3;
char X[16],s,username[16];
int r,i,w,k,n,m,j,t,flag;

void print1()
{
	int i;
	printf("\n MFD:\n");
	printf("----------------\n");
	for(i=0;i<n;i++)
    {
		printf("| %s",mfd[i].username);
		printf("\n----------------\n");
    }
 }

void print2()
{
	int i;
	for(i=0;i<n;i++)
	if (flag==i && ufd!=NULL)
	{
		printf("\n MFD__[%s]\n",mfd[i].username);
		p2=mfd[i].next;
		printf("+_UFD-Filename_+_   Length   _+\n");
		while(p2!=NULL)
		{
			printf("|%10s    |    %4d      |\n",p2->filename,p2->length);
		p2=p2->next;
		printf("+--------------+--------------+\n");
		}
	}
	if(ufd==NULL) printf("\nUFD_[%s] is NULL\n",username);
	if(afd!=NULL)
	{
		p3=afd;
		printf("\n\nAFD_[%s]\n",username);
		printf("+-----Filename-----+----length---+\n");
		while(p3!=NULL)
		{
			printf("|%12s      |      %d      |\n",
			p3->filename,p3->length);
			p3=p3->next;
			printf("+------------------|-------------+\n");
		}
	}
    else 
		printf("\n\nAFD_[%s]  is NULL\n",username);
}

void print3()
{
	p3=afd;
	printf("Input printing-filename:"); scanf("%s",X);
	if(p3!=NULL)
	{
		while((strcmp(p3->filename,X)!=0)&&(p3->next!=NULL))
		p3=p3->next;
		if(strcmp(p3->filename,X)!=0)
			printf("The file hasn't opened!\n");
		else
			if(p3->headlink==NULL) 
				printf("The file is NULL!\n");
			else 
			{
				p=p3->headlink; i=1;
				printf("|   num    |     name       |   sex   |\n");
				printf("---------------------------------------\n");
				while (p!=NULL)
				{
					printf("|%5d     |%10s      |     %d   |\n",i,p->name,p->sex);
					i++; p=p->next;
					printf("---------------------------------------\n");
				}
			}
    } 
	else 
		printf("The file hasn't opened!\n");
}

void pcreate()
{	struct links *temp=0,*pre=0;
	temp=ufd;
	printf("Input  create filename :");
	scanf("%s",X);	
	while(temp!=NULL && strcmp(temp->filename,X)!=0)
	{
		pre=temp;
		temp=temp->next;
	}
	if(temp==NULL)
	{	p2=(struct links *)malloc(sizeof(struct links));
		temp=p2;
		if(NULL==ufd) 
			ufd=temp;
		else
			pre->next=p2;
		strcpy(temp->filename,X);
		temp->next=NULL;
		temp->length=0;
		temp->headlink=NULL;
		printf("Success!");
	}
 	else
		printf("\nThe filename has already been Created!\n");
}

void popen()
{	struct links *temp=0,*pre=0;
	struct linkt *tempt=0,*pret=0;
	printf("Input  open  filename:");
	scanf("%s",X);
	temp=ufd;
	while(temp!=NULL)
	{
		pre=temp;
		if(0==strcmp(pre->filename,X))
			break;
		else
			temp=temp->next;
	}
	if(NULL==temp)
		printf("\ncan't find\"%s\" file in \"%s\"USER.",X,mfd[i].username);
	else
	{
		tempt=afd;
		while(tempt!=NULL && strcmp(tempt->filename,X)!=0)
		{
			pret=tempt;
			tempt=tempt->next;
		}
		if(tempt==NULL)
		{	
			p3=(struct linkt *)malloc(sizeof(struct linkt));
			tempt=p3;
			if(NULL==afd) 
				afd=tempt;
			else
				pret->next=tempt;
			strcpy(tempt->filename,X);
			tempt->next=NULL;
			tempt->length=0;
			tempt->flag=0;
			tempt->headlink=NULL;
			printf("Success!");
		}
		else
			printf("\nThe file \"%s\"has been opened",X);
	}

}

void pclose()
{
	struct links *temp=0,*pre=0;
	struct linkt *tempt=0,*pret=0;
	printf("\nInput filename you want to close:");
	scanf("%s",X);
	tempt=afd;
	while(tempt!=NULL && strcmp(tempt->filename,X)!=0)
	{
		pret=tempt;
		tempt=tempt->next;
	}
	if(tempt==NULL)
		printf("\nThe file has not been open");
	else
	{	
		if(NULL==pret)
			afd=tempt->next;
		else
			pret->next=tempt->next;
		if(tempt->flag)
		{	
			temp=ufd;
			while(temp!=NULL)
			{
				pre=temp;
				if(0==strcmp(pre->filename,X))
					break;
				else
					temp=temp->next;
			}
			if(NULL==temp)
				printf("The file \"%s\" can not be found in ufd",X);
			else
			{	
				temp->length=tempt->length;
				temp->headlink=tempt->headlink;	
			}
		free(tempt);
		}
		printf("success!");
	}
		
}

void pdelete()
{ 
	struct links *temp=0,*pre=0;
	struct linkt *tempt=0,*pret=0;
	printf("\nInput  filename to be deleted :");
	scanf("%s",X);
	tempt=afd;
	while(tempt!=NULL && strcmp(tempt->filename,X)!=0)
	{
		pret=tempt;
		tempt=tempt->next;
	}
	if(tempt!=NULL)
	{	
		if(NULL==pret)
			afd=tempt->next;
		else
			pret->next=tempt->next;
		free(tempt);
	}	
	temp=ufd;
	while(temp!=NULL)
	{
		if(0==strcmp(temp->filename,X))
			break;
		else
		{	
			pre=temp;
			temp=temp->next;
		}
	}
	if(NULL==temp)
		printf("\nThe file \"%s\" can not be found in user \"%s\"",X,mfd[i].username);
	else
	{
		if(0==pre)
			ufd=temp->next;
		else
			pre->next=temp->next;
		free(temp);
	}
}

void close()
{
	while (afd!=NULL)
	{
		p3=afd; afd=afd->next;
		p2=ufd;
		while(strcmp(p2->filename,p3->filename)!=0
		    &&p2->next!=NULL) p2=p2->next;
		if(strcmp(p2->filename,p3->filename)==0)
		{
			p2->length=p3->length; p2->headlink=p3->headlink;
		}
		free(p3);
	}
}

void pread()
{
	struct linkt *tempt=0,*pret=0;
	struct linkr *tempr=0,*prer=0;
	int No,j;
	printf("\nInput filename you want to open:");
	scanf("%s",X);
	tempt=afd;
	while(tempt!=NULL && strcmp(tempt->filename,X)!=0)
	{
		pret=tempt;
		tempt=tempt->next;
	}
	if(tempt==NULL)
		printf("\nThe file has not been open");
	else
	{
			printf("\nInput the NO of record that you want to read:");
			scanf("%d",&No);
			tempr=tempt->headlink;
			for(j=0;j<No;j++)
				if(NULL==tempr)
				{	
					printf("\nIt can not find that the NO%d record",No);
					prer=tempr;
					break;
				}
				else
				{	
					prer=tempr;
					tempr=tempr->next;
				}
			if(prer!=NULL)
				printf("\n%d\t%s\t%d",No,prer->name,prer->sex);
	}
}

void pwrite()
{
	struct linkt *tempt=0,*pret=0;
	struct linkr *tempr=0,*prer=0;
	int j;
	printf("\nInput filename you want to open:");
	scanf("%s",X);
	tempt=afd;
	while(tempt!=NULL && strcmp(tempt->filename,X)!=0)
	{
		pret=tempt;
		tempt=tempt->next;
	}
	if(tempt==NULL)
		printf("\nThe file has not been open");
	else
	{
		p=(struct linkr *)malloc(sizeof(struct linkr));	
		printf("\nInput student-name :");
		scanf("%s",X);
		printf("\nInput student-sex  1(male) or 0(female):");
		scanf("%d",&j);
		strcpy(p->name,X);
		p->sex=j;
		p->next=NULL;
		tempr=tempt->headlink;
		if(NULL==tempt->headlink) 
			tempt->headlink=p;
		else
		{
			while(tempr!=NULL)
			{
				prer=tempr;
				tempr=tempr->next;
			}
			prer->next=p;
		}
		tempt->flag=1;
		tempt->length++;
		printf("Success!");

	}
}

void main()
{ 
	afd=NULL;  ufd=NULL;
	for (i=0;i<5;i++)
	{
		strcpy(mfd[i].username,"                ");
		mfd[i].next=NULL;
	}
    printf("User number N(N<=5)=");scanf("%d",&n);
    for(i=0;i<n;i++)
	{
		w=0;
		printf("User MFD username X[%d]=",i+1);scanf("%s",X);
		for (j=0;j<n;j++)
			if(strcmp(mfd[j].username,X)==0) 
				w=1;
		if(w==0) 
			strcpy(mfd[i].username,X);
		else
		{ 
			printf("\nThe Username has been Created!\n");i--;}
		}
	do
	{ 
		print1();
		do
		{ 
			printf("Input user name you want to operate:");
		scanf("%s",username);
		for(i=0;(i<n&&(strcmp(mfd[i].username,username)!=0));i++);
		if(i>=n) 
			{printf("Not found Username!\n");}
		}while(i>=n);
		t=0; 
		flag=i; 
		ufd=mfd[i].next;
		do
		{ 
			printf("\n------------------------------------\n");
			printf("  1--Creat    2--Open     3--Delete\n");
			printf("  4--cLose    5--Read     6--Write\n");
			printf("  7--disPlay  8--fileplay 9--Quit\n");
			printf("------------------------------------\n");
			printf("               Select[ ]\b\b");
			scanf("%s",&s);
			switch(s)
			{
				case '1':pcreate();break;
				case '2':popen();break;
				case '3':pdelete();break;
				case '4':pclose();break;
				case '5':pread();break;
				case '6':pwrite();break;
				case '7':print2();break;
				case '8':print3();break;
				case '9':t=1;close();
			}
			mfd[i].next=ufd;
		}while(!t);
		printf("\n---------------------------------------\n");
		printf("|   1--Edit other user  ,  2--Quit    |\n" );
		printf("---------------------------------------\n");
		printf("                Select[ ]\b\b");
		scanf("%d",&m);
		if(m==2) 
			r=1;
		else  
			r=0;
	}while(!r);
}