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#include<stdio.h>
#include<string.h>
#include <stdlib.h>
#define LENGTH 1024
typedef struct Rec1
{
        long nomer;
        char name[50];
        int year;
        long count;
};
typedef struct ELT{
        Rec1 data;
        struct ELT *next;
}ELT;
void AddElement(ELT **last,Rec1 x){
        ELT *q;
        q=(ELT*)malloc(sizeof(ELT));
        q->data=x;
        q->next=NULL;
        (*last)->next=q;
        *last=q;
}
int CreateHead(ELT **head,ELT **last,char *fileName){
        *head=(ELT*)malloc(sizeof(ELT));
        (*head)->next=NULL;
        *last=*head;
        FILE *f;
        Rec1 buf;
        if((f=fopen(fileName,"r"))==NULL)
                return 1;
        while(fread(&buf,sizeof(Rec1),1,f)==1)
                AddElement(last,buf);
        fclose(f);
        return 0;
}
void Print(ELT *head)
{
        ELT *q;
        q=head->next;
        while(q!=NULL){
        		printf("\nNomer: %d\n",q->data.nomer);
                printf("Name: %s\n",q->data.name);
                printf("Year: %d\n",q->data.year);
                printf("Count: %ld\n",q->data.count);
                q=q->next;
        }
        printf("\n");
}
void Distruct(ELT *head,ELT **last){
        ELT *q,*t;
        q=head->next;
        while(q!=NULL){
                t=q;
                q=q->next;
                free(t);
        }
        head->next==NULL;
        *last=head;
}


long Size(char *fname)
{
        FILE *f;
        long n;
        if((f=fopen(fname,"rb"))==NULL)
                return -1;
        fseek(f,0,SEEK_END);
        n=ftell(f);
        fclose(f);
        return n;
}
int CreateFileIn(char *fname, bool flag)
{
        FILE *f;
        struct Rec1 rec;
        int i=1;
        if(flag){
        	if((f=fopen(fname, "wt"))==NULL)
                return 1;
        }
        else if((f=fopen(fname, "at"))==NULL)
                return 1;
        printf("Nomer:");
        scanf("%d",&rec.nomer);
        while(rec.nomer!=000)
        {
                rec.nomer=i;
                printf("Name:");
                scanf("%s",rec.name);
                printf("Year:");
                scanf("%d",&rec.year);
                printf("count:");
                scanf("%ld",&rec.count);
                fwrite(&rec,sizeof(rec),1,f);
                printf("Nomer:");
                scanf("%d",&rec.nomer);
                i++;
        }
        fclose(f);
        return 0;
}
int CreateFileOut(char *fname, ELT *head)
{
        FILE *f;
        struct Rec1 rec;
        int i=1;
       	if((f=fopen(fname, "wt"))==NULL)
        	return 1;
       	ELT *q;
       	q=head->next;
        while(q!=NULL)
        {
                rec=q->data;
                fwrite(&rec,sizeof(rec),1,f);
                q=q->next;
        }
        fclose(f);
        return 0;
}
int AddFileIn(FILE *f,const struct Rec1 *rec)
{
        fseek(f,0,SEEK_END);
        fwrite(rec,sizeof(*rec),1,f);
        if(ferror(f))
                return 1;
        else
                return 0;
}

int ReadFileIn(char *fname)
{
        FILE *f;
        if((f=fopen(fname, "rt"))==NULL)
                return 1;
        struct Rec1 rec;
        while(fread(&rec,sizeof(rec),1,f))
        {

                printf("\nNomer: %d\n",rec.nomer);
                printf("Name: %s\n",rec.name);
                printf("Year: %d\n",rec.year);
                printf("Count: %ld\n",rec.count);

        }
        fclose(f);
        return 0;
}
int ReadFileOut(char *fname2)
{
        FILE*f2;
        Rec1 rec1;
        if((f2=fopen(fname2,"rb"))==NULL)
                return -1;
        while (fread(&rec1,sizeof(rec1),1,f2))
                printf("Nazvanie:%10s Year: %10d Count: %ld\n",rec1.name,rec1.year,rec1.count);
        fclose(f2);
        return 0;
}
void CountSortNom(char *fname)
{
        FILE *f;
        Rec1 *a,buf;
        int flag;
        long n,i,r;
        if((f=fopen(fname,"r+b"))==NULL)
                return;
        n=Size(fname)/sizeof(Rec1);
        a=(Rec1*)malloc(n*sizeof(Rec1));
        if(a==NULL||fread(a,sizeof(Rec1),n,f)!=n){
                fclose(f);
                return;
        }
        r=n;
        do{
                flag=0;
                for(i=1;i<r;i++)
                        if(a[i-1].nomer>a[i].nomer){
                                buf=a[i];a[i]=a[i-1];a[i-1]=buf;
                                flag=1;
                        }
                r--;
        }while(flag);
        rewind(f);
        fwrite(a,sizeof(Rec1),n,f);
        fclose(f);
        free(a);
}
void CountSortCount(char *fname)
{
        FILE *f;
        Rec1 *a,buf;
        int flag;
        long n,i,r;
        if((f=fopen(fname,"r+b"))==NULL)
                return;
        n=Size(fname)/sizeof(Rec1);
        a=(Rec1*)malloc(n*sizeof(Rec1));
        if(a==NULL||fread(a,sizeof(Rec1),n,f)!=n){
                fclose(f);
                return;
        }
        r=n;
        do{
                flag=0;
                for(i=1;i<r;i++)
                        if(a[i-1].count<a[i].count)
                                                {
                                buf=a[i];a[i]=a[i-1];a[i-1]=buf;
                                flag=1;
                        }
                r--;
        }while(flag);
        rewind(f);
        fwrite(a,sizeof(Rec1),n,f);
        fclose(f);
        free(a);
}
int CreateHeadNew(ELT **head1,ELT **last1,ELT *head){
        *head1=(ELT*)malloc(sizeof(ELT));
        (*head1)->next=NULL;
        *last1=*head1;
        ELT *q;
        q=head->next;
        while(q!=NULL){
                AddElement(last1,q->data);
                q=q->next;
        }
        return 0;
}
int main()
{
        ELT *head,*last,*head1,*last1;
        int a;
        char *fname = "C:\\struct1.date";
        char *fname2 = "C:\\struct2.date";

        printf("Vibirite deystvie\n");
        printf("1.Sozdat'ishodniy FILE\n");
        printf("2.Vivesty ishodniy FILE na monitor.\n");
        printf("3.Dobavit' v konec FILE elementy.\n");
        printf("4.Sozdat' spisok iz FILE.\n");
        printf("5.Redaktirovat' spisok po kriteriu.\n");
        printf("6.Sozdat' noviy spisok po kriteriu.\n");
        printf("7.Sozdat' konechniy FILE.\n");
        printf("8.Vivesty konechniy FILE.\n");
        scanf("%d",&a);
        while(a)
        {
                if(a==1)
                        CreateFileIn(fname,true);
                if(a==2)
                        ReadFileIn(fname);
                if(a==3)
                        CreateFileIn(fname,false);
                if(a==4)
                        CreateHead(&head,&last,"C:\\struct1.date");
                if(a==6)
                        CreateHeadNew(&head1,&last1,head);
                if(a==7)
                        CreateFileOut(fname2,head1);
                if(a==8)
                        ReadFileIn(fname2);
                if(a==10)
                        Print(head1);
                printf("Vibirite sleduyushee deystvie\n");
                scanf("%d",&a);
        }
        printf("Redaktirovanie zaversheno\n");
        return 0;
}