hello every one
am new here and really confused with my C++ subject. i saw a few post here was deleted or not answered. i hope my one wont go without answer.
now here is my problem.
I REALLY DUNNO what am doing. i was able to write the program like this but the errors coming up and i cannot fix.
Please help me with fixing this one and if u have other suggestions to make it better plz it will be real helpful.

#include <iostream>
#include <cstdlib> 
#include <conio.h> 
#include <fstream>
#include <sys\stat.h> 
using namespace std;

void main();

struct Book_Record;


{	int Book_TYPE;
	
	union
	{
		struct 
		{
			char Book_title;
			char Book_category;
			int Book_date; // added in librery
			char Book_author;
			char Book_publisher;
			int YEAR_PUBLISHED;

	
	};

	char title;
	char category;
	char author;
	int date;
	char publisher;
	int  YEAR;
	bool deleted;
};

#define Book_FILE_NAME "Book.txt"

Book_Record  Book;
char     choice; //
fstream  *fs = NULL, *fs1 = NULL;
bool     deletion = false; 

void closeFile(fstream *);
bool isFileExist(const char *);

int main()
{
	while (true)
	{
		do 
		{
			system( "cls" );
				
			cout << "\n\n    < Book Record Database > \n\n";
			cout << "(1) Add a new Book Record \n";
			cout << "(2) Modify an existing Book Record\n";
			cout << "(3) Delete an existing Book Record \n";			
			cout << "(4) Display Book Records \n";
			cout << "(5) Quit \n\n";
			cout << " Enter a choice (1-5) : " << flush;
			choice = getch();
	
	

} while ( choice < '1' || choice > '5');

		system( "cls" );

		
		if (choice == '2' || choice == '3' || choice == '4')
		{
			if (!isFileExist(Book_FILE_NAME)) 
			{
				cout << "\n Database file ('" << Book_FILE_NAME << "') doesn't exist, then there are no records." <<  endl;
				system("pause");
				continue; 
			}
		}

		switch ( choice )
		{
		int recs_num; 
		int Book_TYPE;

		case '1' :

			cout << "\n\t\t < Entering a new Book record > ";
			cout << "\n   Enter the following informations for the new record : ";
			cout << "\n\n Book_TYPE : ";
			cin  >> Book.Book_TYPE;

			cout << "\n Title of the Book : ";
			cin  >> Book.Book_TITLE;
			cout << "\n Catagory of the Book : ";
			cin  >> Book.Book_Catagory;
			cout << "\n Year Published : ";
			cin  >> Book.YEAR_PUBLISHED;
			cout <<"\n Author of the Book : ";
			cin  >>Book.author;
			cout <<"\n Publisher of the Book : ";
			cin  >>Book.publisher;
			cout <<"\n Addwd to library ( Date) :" ;
			cin  >>Book.date;


		}

			Book.deleted = 0;

			fs = new fstream( Book_FILE_NAME, ios::out | ios::app | ios::binary );

			if (!fs)
			{
				cout << "\n ERROR: Cannot Access or Open '" << Book_FILE_NAME << "' file" << endl;
				system("pause");
				break;
			}
			
			fs->write( (char *) &Book, sizeof(Book) );
					
			closeFile(fs);

			cout << "\n Book Record added successfully." << endl;
			system("pause");
			
			break;

		case '2' : 

			cout << "\n Enter the Title of the Book that you want modify : ";
			cin  >> Book.Book_TITLE;

			fs = new fstream( Book_FILE_NAME, ios::in | ios::out | ios::binary );

			if (!fs)
			{
				cout << "\n ERROR: Cannot Access or Open '" << Book_FILE_NAME << "' file" <<  endl;
				system("pause");

				break;
			}
			
			recs_num = -1;

			while (fs->read( (char *) &Book, sizeof(Book) ))
			{
				recs_num++;

				if ( Book.Book_TITLE == Newest && !Book.deleted)
					break;
			}

			if (fs->eof()) 
			{
				cout << "\n The Book file cannot be found." << endl;
				closeFile(fs);
				system("pause");
				break;
			}


			cout << "\n   Enter new information again : ";
			cout << "\n\n Book_TYPE  : ";
			cin  >> Book.Book_TYPE;

		    cout << "\n Title of the Book : ";
			cin  >> Book.Book_TITLE;
			cout << "\n Catagory of the Book : ";
			cin  >> Book.Book_Catagory;
			cout << "\n Year Published : ";
			cin  >> Book.YEAR_PUBLISHED;
			cout <<"\n Author of the Book : ";
			cin  >>Book.author;
			cout <<"\n Publisher of the Book : ";
			cin  >>Book.publisher;
			cout <<"\n Addwd to library ( Date) :" ;
			cin  >>Book.date;

			
			

fs->seekp ( sizeof(Book) * recs_num, ios::beg );
fs->write( (char *) &Book, sizeof(Book) );
			
closeFile(fs);

			cout << "\n The Book Record has been successfully modified." << endl;
			system("pause");

			break;


		case '3' :

			cout << "\n Enter the Book you want to delete : ";
			cin  >> Book.Book_TITLE;

			fs = new fstream( Book_FILE_NAME, ios::in | ios::out | ios::binary );

			if (!fs)
			{
				cout << "\n ERROR: Cannot Access or Open '" << Book_FILE_NAME << "' file." <<  endl;
				system("pause");
				break;
			}
			
			recs_num = -1;

			while (fs->read( (char *) &Book, sizeof(Book) ))
			{
				recs_num++;

				if ( Book.Book_TITLE == Book_TYPE && !Book.deleted ) 
					break;
			}

			if (fs->eof()) 
			{
				cout << "\n The Book that you are finding is not in the database file." << endl;
				closeFile(fs);
				system("pause");				
				break;
			}

			Book.deleted = 1;

			fs->seekp ( sizeof(Book) * recs_num, ios::beg );
			fs->write( (char *) &Book, sizeof(Book) );
			
			closeFile(fs);

			deletion = true;

			cout << "\n Book Record has bees successfully deleted." << endl;
			system("pause");

			break;


		case '4' : 
			
			fs = new fstream( Book_FILE_NAME, ios::in | ios::binary );

			if (!fs)
			{
				cout << "\n ERROR: Cannot Access or Open '" << Book_FILE_NAME << "' file." << endl;
				system("pause");
				break;
			}

			
			cout << "Book_TITLE\tBook_GENRE\tYEAR_PUBLISHED\n"
				 << "-------------------------------------------------- \n";							
						
			while (fs->read( (char *) &Book, sizeof(Book) )) 
			{
				if ( Book.Book_TYPE == Newest && !Book.deleted )
				{
					
					cout << Book.title << '\t';
					cout << Book.category << '\t';
					cout << Book.date << '\t' ; 
					cout << Book.author << '\t';
					cout << Book.publisher << '\t';
					cout << Book.YEAR_PUBLISHED <<'\t';
				
				}
			}

			

			closeFile(fs);

			
			fs = new fstream( Book_FILE_NAME, ios::in | ios::binary );

			if (!fs)
			{
				cout << "\n ERROR: Cannot Access or Open '" << Book_FILE_NAME << "' file." << endl;
				system("pause");
				break;
			}
			
			
			}
			
			cout << "\n To go back to the main menu, "; system("pause");

			closeFile(fs);

			break;
			

		case '5' : 

			if (deletion) 
			{
				cout << "\n Updating '" << Book_FILE_NAME << "' File..." << endl;

				fs = new fstream( Book_FILE_NAME, ios::in | ios::binary );
				if (!fs)
				{
					cout << "\n ERROR: Cannot Access or Open '" << Book_FILE_NAME << "' file, Update failed." << endl;
					system("pause");

					system( "cls" );
					return 1;
				}

				fs1 = new fstream( "temp", ios::out | ios::binary);
				if (!fs1)
				{
					cout << "\n Cannot create temp file, Update failed." << endl;
					system("pause");

					closeFile(fs);
					system( "cls" );
					return 1;
				}

				
				while (fs->read( (char *) &Book, sizeof(Book) ))
					if ( !Book.deleted )
						fs1->write( (char *) &Book, sizeof(Book) );

				closeFile(fs);
				closeFile(fs1);

			    if( remove( Book_FILE_NAME ) == -1 ) 
				{
					cout << "\n ERROR: Cannot delete the Book '" << Book_FILE_NAME << "' file, Update failed." << endl;
					system("pause");
					
					system( "cls" );
					return 1;
				}
				
				
				struct stat st; 
				int res = stat( "temp", &st );
				
				if (st.st_size == 0) 				
					remove( "temp" ); 
				else
					if ( rename ("temp", Book_FILE_NAME) )
					{
						cout << "\n ERROR: Cannot rename temp file, Update failed." << endl;
						system("pause");
						
						system( "cls" );
						return 1;
					}

				cout << "\n Update completed." << endl;
				system("pause");
			}

			system( "cls" );
			return 0;

			break ;
		} 
	} 




void closeFile(fstream *fs);

{fs->close(); 
	delete fs;
	fs = NULL;}



bool isFileExist(const char * file_name)
{	
	struct stat st; 
	int res = stat( file_name, &st );
	return (res == 0); 
}

And am real sorry if i break any rule of the forum. hope some one can help me

well not really my work. i just edited this one. this one was given by a puzzle to me as it had almost 200 errors. i fixed almost all but cannot do the last 3 so i posted.

The struct that starts at line 17 is never closed or named, also the union that that struct is in is never named. But I think it is kind of useless to have a union that only has 1 element in it anyway, I would recommend removing that union.

Error 1 error C2447: '{' : missing function header (old-style formal list?) line 13
Error 2 error C2447: '{' : missing function header (old-style formal list?)
line 373

this the 2 errors am getting.and thnx i removed union and struct. the union was there coz this had 2 part at the beganing

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