Plzz Modify Code Game...

guys i m having this QUIZ GAME PROJECT
C++ PROGRAM PLZZZ SOMEONE ADD LOGIN PASSWORD IN THIS CODE
SO THAT ONLY CORRECT USER N PASS CAN EDIT THOSE QUESTION N OTHERS THINGS IN CODE THIS HELP...

HAS NO ERROR...
PLZZZ ADD LOGIN CODDING IN THIS...=|




//**********************************************************
// PROJECT COMPUTER QUIZ
//**********************************************************

//**********************************************************
// INCLUDED HEADER FILES
//**********************************************************
#include <iostream.h>
#include <conio.h>
#include <dos.h>
#include <string.h>
#include <fstream.h>
#include <process.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>


//**********************************************************
// CLASS NAME : lines
// DETAILS : IT CONTROLS FUNCTIONS RELATED TO DRAW
// LINES, BOXES, ETC.
//**********************************************************

class lines
{
public :
void line_hor (int, int, int, char) ;
void line_ver (int, int, int, char) ;
void box (int,int,int,int,char) ;
} ;


//***************************************************************
// CLASS NAME : menu
// DETAILS : IT CONTROLS OVER ALL FUNCTIONING OF PROJECT
//***************************************************************

class menu
{
public :
void main_menu(void) ;
char *sub_menu(void) ;
void start(void) ;
private :
void edit_menu(void) ;
} ;


//**********************************************************
// CLASS NAME : quiz
// DETAILS : IT CONTROLS OVER ALL THE FUNCTIONS
// RELATED TO QUIZ
//**********************************************************

class quiz
{
public :
void play(char filename[13]) ;
void add(char filename[13]) ;
void deletion(char filename[13]) ;
void modify(char filename[13]) ;
private :
void delete_record(char filename[13], int) ;
void modify_record(char filename[13], int) ;
void display_score(char name[20], int, int) ;
int recordno(char filename[13], int) ;
int record_count(char filename[13]) ;
int found_record(char filename[13], int) ;
void display_record(char filename[13], int) ;
int ques_no ;
char ques[60] ;
char ans1[50] ;
char ans2[50] ;
char ans3[50] ;
char sol ;
} ;


//**********************************************************
// CLASS NAME : lines
// FUNCTION NAME : line_hor
// DETAILS : IT ACCEPTS THE ROWS AND COLUMNS AND
// DRAW THE HORIZONTAL LINE
//**********************************************************

void lines :: line_hor(int column1, int column2, int row, char c)
{
for ( column1; column1<=column2; column1++ )
{
gotoxy(column1,row) ;
cout <<c ;
}
}


//**********************************************************
// CLASS NAME : lines
// FUNCTION NAME : line_ver
// DETAILS : IT ACCEPTS THE ROWS AND COLUMNS AND
// DRAW THE VERTICAL LINE
//**********************************************************

void lines :: line_ver(int row1, int row2, int column, char c)
{
for ( row1; row1<=row2; row1++ )
{
gotoxy(column,row1) ;
cout <<c ;
}
}

//**********************************************************
// CLASS NAME : lines
// FUNCTION NAME : box
// DETAILS : IT ACCEPTS THE ROWS AND COLUMNS AND
// DRAW THE BOX
//**********************************************************

void lines :: box(int column1, int row1, int column2, int row2, char c)
{
char ch=218 ;
char c1, c2, c3, c4 ;
char l1=196, l2=179 ;
if (c == ch)
{
c1 = 218 ;
c2 = 191 ;
c3 = 192 ;
c4 = 217 ;
l1 = 196 ;
l2 = 179 ;
}
else
{
c1 = c ;
c2 = c ;
c3 = c ;
c4 = c ;
l1 = c ;
l2 = c ;
}
gotoxy(column1,row1) ;
cout <<c1 ;
gotoxy(column2,row1) ;
cout <<c2 ;
gotoxy(column1,row2) ;
cout <<c3 ;
gotoxy(column2,row2) ;
cout <<c4 ;
column1++ ;
column2-- ;
line_hor(column1,column2,row1,l1) ;
line_hor(column1,column2,row2,l1) ;
column1-- ;
column2++ ;
row1++ ;
row2-- ;
line_ver(row1,row2,column1,l2) ;
line_ver(row1,row2,column2,l2) ;
}


//**********************************************************
// CLASS NAME : menu
// FUNCTION NAME : start
// DETAILS : IT CREATES THE OPENING SCREEN
//**********************************************************

void menu :: start(void)
{
lines line ;
textmode(C40) ;
clrscr() ;
textbackground(LIGHTCYAN);
textcolor(BLACK) ;
clrscr() ;
gotoxy(8,12) ;
cout <<"C O M P U T E R" ;
gotoxy(25,12) ;
cout <<"Q U I Z" ;
line.box(4,10,36,14,219) ;
gotoxy(5,21);
cout<<"MADE BY :";
gotoxy(5,22);
cout<<"AMIT & DARSHAN";


line.box(2,19,40,24,219);
gotoxy(4,10);
getch() ;
textbackground(BLACK) ;
textcolor(LIGHTGRAY) ;
clrscr() ;
}


//**********************************************************
// CLASS NAME : menu
// FUNCTION NAME : main_menu
// DETAILS : IT CREATES THE MAIN MENU TO CONTROL
// ALL THE FUNCTIONS
//**********************************************************

void menu :: main_menu(void)
{
lines line ;
textmode(C40) ;
clrscr ;
int valid ;
int n = 4 ;
int x = 14 ;
char ch1, ch2 ;
char chr1=219, chr=175 ;
do
{
line.box (1,1,39,25,219) ;
line.line_hor(9,31,6,196) ;
line.box (8,3,32,20,218) ;
char c1=24, c2=25 ;
gotoxy(3,24) ;
cout <<c1 ;
cout <<c2 ;
cout <<"=Move <ENTER>=Select <ESC>=Exit" ;
gotoxy(13,5) ;
cout <<chr1 ;
textbackground(WHITE) ;
textcolor(BLACK) ;
gotoxy(14,5) ;
cprintf("Q U I Z ") ;
textbackground(BLACK) ;
textcolor(LIGHTGRAY) ;
gotoxy(14,8) ;
cout <<"OPTIONS" ;
gotoxy(14,9) ;
cout <<"-------" ;
gotoxy(14,11) ;
cout <<"PLAY" ;
gotoxy(14,12) ;
cout <<"ADD QUESTIONS" ;
gotoxy(14,13) ;
cout <<"EDIT" ;
gotoxy(14,14) ;
cout <<"QUIT" ;
gotoxy(10,x) ;
cout <<chr ;
gotoxy(13,5) ;
do
{
do
{
do
{
ch1 = getch() ;
if ( ch1 == 27 )
{
textmode(C80) ;
clrscr() ;
exit(0) ;
}
} while (( ch1 != 0 ) && ( ch1 != 13 )) ;
if ( ch1 != 13 )
{
do
{
ch2 = getch() ;
if ( ch2 == 27 )
{
textmode(C80) ;
clrscr() ;
exit(0) ;
}
} while (( ch2 != 72 ) && ( ch2 != 80 ) && ( ch2 != 13 )) ;
}
} while ((( ch1 != 0 ) || (( ch2 != 72 ) && ( ch2 != 80 ))) && (( ch1 != 13 ) && ( ch2 != 13 ))) ;
if (( ch1 == 0 ) && ( ch2 == 80 ))
{
gotoxy(10,x) ;
cout <<" " ;
if (n == 4)
{
n = 1 ;
x = x - 3 ;
}
else
{
n = n + 1 ;
x = x + 1 ;
}
gotoxy(10,x) ;
cout <<chr ;
gotoxy(13,5) ;
sound(200) ;
delay(30) ;
nosound() ;
}
if (( ch1 == 0 ) && ( ch2 == 72 ))
{
gotoxy(10,x) ;
cout <<" " ;
if ( n == 1 )
{
n = 4 ;
x = x + 3 ;
}
else
{
n = n - 1 ;
x = x - 1 ;
}
gotoxy(10,x) ;
cout <<chr ;
gotoxy(13,5) ;
sound(200) ;
delay(30) ;
nosound() ;
}
} while (( ch1 != 13 ) && ( ch2 != 13 )) ;
if (n == 1)
{
char filename[13] ;
strcpy(filename,sub_menu()) ;
if (strcmp(filename,"null"))
{
quiz q ;
q.play(filename) ;
clrscr() ;
}
}
if (n == 2)
{
char filename[13] ;
strcpy(filename,sub_menu()) ;
if (strcmp(filename,"null"))
{
textmode(C80) ;
clrscr() ;
quiz q ;
q.add(filename) ;
textmode(C40) ;
clrscr() ;
}
}
if (n == 3)
edit_menu() ;
} while ( n != 4 ) ;
textmode(C80) ;
clrscr() ;
}


//**********************************************************
// CLASS NAME : menu
// FUNCTION NAME : edit_menu
// DETAILS : IT CREATES THE EDIT MAIN MENU
//**********************************************************

void menu :: edit_menu(void)
{
lines line ;
int valid ;
static int n = 3 ;
static int x = 19 ;
char ch1, ch2 ;
char chr1=219, chr=175 ;
do
{
line.box(19,14,31,20,218) ;
gotoxy(21,15) ;
cout <<chr1 ;
textbackground(WHITE) ;
textcolor(BLACK) ;
gotoxy(22,15) ;
cprintf("E D I T ") ;
textbackground(BLACK) ;
textcolor(LIGHTGRAY) ;
gotoxy(23,17) ;
cout <<"DELETE" ;
gotoxy(23,18) ;
cout <<"MODIFY" ;
gotoxy(23,19) ;
cout <<"RETURN" ;
gotoxy(20,x) ;
cout <<chr ;
gotoxy(21,15) ;
do
{
do
{
do
{
ch1 = getch() ;
if ( ch1 == 27 )
{
gotoxy(1,15) ; clreol() ;
gotoxy(1,17) ; clreol() ;
gotoxy(1,18) ; clreol() ;
gotoxy(1,19) ; clreol() ;
gotoxy(1,20) ; clreol() ;
gotoxy(19,14) ; clreol() ;
return ;
}
} while (( ch1 != 0 ) && ( ch1 != 13 )) ;
if ( ch1 != 13 )
{
do
{
ch2 = getch() ;
if ( ch2 == 27 )
{
gotoxy(1,15) ; clreol() ;
gotoxy(1,17) ; clreol() ;
gotoxy(1,18) ; clreol() ;
gotoxy(1,19) ; clreol() ;
gotoxy(1,20) ; clreol() ;
gotoxy(19,14) ; clreol() ;
return ;
}
} while (( ch2 != 72 ) && ( ch2 != 80 ) && ( ch2 != 13 )) ;
}
} while ((( ch1 != 0 ) || (( ch2 != 72 ) && ( ch2 != 80 ))) && (( ch1 != 13 ) && ( ch2 != 13 ))) ;
if (( ch1 == 0 ) && ( ch2 == 80 ))
{
gotoxy(20,x) ;
cout <<" " ;
if (n == 3)
{
n = 1 ;
x = x - 2 ;
}
else
{
n = n + 1 ;
x = x + 1 ;
}
gotoxy(20,x) ;
cout <<chr ;
gotoxy(21,15) ;
sound(200) ;
delay(30) ;
nosound() ;
}
if (( ch1 == 0 ) && ( ch2 == 72 ))
{
gotoxy(20,x) ;
cout <<" " ;
if ( n == 1 )
{
n = 3 ;
x = x + 2 ;
}
else
{
n = n - 1 ;
x = x - 1 ;
}
gotoxy(20,x) ;
cout <<chr ;
gotoxy(21,15) ;
sound(200) ;
delay(30) ;
nosound() ;
}
} while (( ch1 != 13 ) && ( ch2 != 13 )) ;
if (n == 1)
{
char filename[13] ;
strcpy(filename,sub_menu()) ;
if (strcmp(filename,"null"))
{
textmode(C80) ;
clrscr() ;
quiz q ;
q.deletion(filename) ;
textmode(C40) ;
clrscr() ;
return ;
}
clrscr() ;
return ;
}
else
if (n == 2)
{
char filename[13] ;
strcpy(filename,sub_menu()) ;
if (strcmp(filename,"null"))
{
textmode(C80) ;
clrscr() ;
quiz q ;
q.modify(filename) ;
textmode(C40) ;
clrscr() ;
return ;
}
clrscr() ;
return ;
}
} while ( n != 3 ) ;
gotoxy(1,15) ; clreol() ;
gotoxy(1,17) ; clreol() ;
gotoxy(1,18) ; clreol() ;
gotoxy(1,19) ; clreol() ;
gotoxy(1,20) ; clreol() ;
gotoxy(19,14) ; clreol() ;
}


//**********************************************************
// CLASS NAME : menu
// FUNCTION NAME : sub_menu
// DETAILS : IT CREATES THE SUB MAIN MENU AND
// RETURN FILE NAME
//**********************************************************

char *menu :: sub_menu(void)
{
lines line ;
clrscr() ;
int valid ;
static int n = 1 ;
static int x = 10 ;
char ch1, ch2 ;
char chr1=219, chr=175 ;
line.box(1,1,39,25,219) ;
line.line_hor(2,38,23,196) ;
char c1=24, c2=25 ;
gotoxy(3,24) ;
cout <<c1 ;
cout <<c2 ;
cout <<"=Move <ENTER>=Select <ESC>=Exit" ;
gotoxy(13,6) ;
cout <<chr1 ;
textbackground(WHITE) ;
textcolor(BLACK) ;
gotoxy(14,6) ;
cprintf("S U B - M E N U ") ;
textbackground(BLACK) ;
textcolor(LIGHTGRAY) ;
line.box(11,5,31,7,218) ;
gotoxy(14,10) ;
cout <<"COMPUTERS" ;
gotoxy(14,12) ;
cout <<"MATHEMATICS" ;
gotoxy(14,14) ;
cout <<"SCIENCE" ;
gotoxy(14,16) ;
cout <<"GENERAL" ;
gotoxy(14,18) ;
cout <<"RETURN" ;
gotoxy(12,x) ;
cout <<chr ;
gotoxy(13,6) ;
do
{
do
{
do
{
ch1 = getch() ;
if ( ch1 == 27 )
{
clrscr() ;
return("null") ;
}
} while (( ch1 != 0 ) && ( ch1 != 13 )) ;
if ( ch1 != 13 )
{
do
{
ch2 = getch() ;
if ( ch2 == 27 )
{
clrscr() ;
return("null") ;
}
} while (( ch2 != 72 ) && ( ch2 != 80 ) && ( ch2 != 13 )) ;
}
} while ((( ch1 != 0 ) || (( ch2 != 72 ) && ( ch2 != 80 ))) && (( ch1 != 13 ) && ( ch2 != 13 ))) ;
if (( ch1 == 0 ) && ( ch2 == 80 ))
{
gotoxy(12,x) ;
cout <<" " ;
if (n == 5)
{
n = 1 ;
x = x - 8 ;
}
else
{
n = n + 1 ;
x = x + 2 ;
}
gotoxy(12,x) ;
cout <<chr ;
gotoxy(13,6) ;
sound(200) ;
delay(30) ;
nosound() ;
}
if (( ch1 == 0 ) && ( ch2 == 72 ))
{
gotoxy(12,x) ;
cout <<" " ;
if ( n == 1 )
{
n = 5 ;
x = x + 8 ;
}
else
{
n = n - 1 ;
x = x - 2 ;
}
gotoxy(12,x) ;
cout <<chr ;
gotoxy(13,6) ;
sound(200) ;
delay(30) ;
nosound() ;
}
} while (( ch1 != 13 ) && ( ch2 != 13 )) ;
clrscr() ;
if (n == 1)
return("computer.dat") ;
else
if (n == 2)
return("maths.dat") ;
else
if (n == 3)
return("science.dat") ;
else
if (n == 4)
return("general.dat") ;
return("null") ;
}


//**********************************************************
// CLASS NAME : quiz
// FUNCTION NAME : record_count
// DETAILS : IT RETURNS THE NO. OF RECORD IN THE
// GIVEN FILE
//**********************************************************

int quiz :: record_count(char filename[13])
{
fstream file ;
file.open(filename, ios::in) ;
file.seekg(0,ios::beg) ;
int t=0 ;
while (file.read((char *) this, sizeof(quiz)))
t++ ;
file.close() ;
return t ;
}

//**********************************************************
// CLASS NAME : quiz
// FUNCTION NAME : add
// DETAILS : IT ADDS THE RECORDS IN THE GIVEN FILE
//**********************************************************

void quiz :: add(char filename[13])
{
lines line ;
int valid ;
int t_ques_no ;
t_ques_no = record_count(filename) ;
t_ques_no++ ;
if (t_ques_no == 1)
{
ques_no = t_ques_no ;
strcpy(ques,"abc") ;
strcpy(ans1,"-") ;
strcpy(ans2,"-") ;
strcpy(ans3,"-") ;
sol = '0' ;
fstream file ;
file.open(filename, ios:ut | ios::app ) ;
file.write((char *) this, sizeof(quiz)) ;
file.close() ;
delete_record(filename,t_ques_no) ;
}
char ch ;
do
{
clrscr() ;
line.box(1,1,79,23,218) ;
gotoxy(3,5) ;
cout <<"question # " <<t_ques_no ;
gotoxy(3,8) ;
cout <<"question : " ;
gotoxy(3,10) ;
cout <<"answer 1 : " ;
gotoxy(3,12) ;
cout <<"answer 2 : " ;
gotoxy(3,14) ;
cout <<"answer 3 : " ;
gotoxy(3,16) ;
cout <<"solution : " ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(1,25) ; clreol() ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,25) ;
cout <<"ENTER QUESTION" ;
gotoxy(14,8) ;
gets(ques) ;
strupr(ques) ;
if (ques[0] == '0')
return ;
if (strlen(ques) > 159 || strlen(ques) == 0)
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(1,25) ; clreol() ;
gotoxy(1,24) ;
cout <<"LENGTH SHOULD NOT BE BLANK OR GREATER THAN 159" ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
gotoxy(1,24) ; clreol() ;
gotoxy(1,25) ; clreol() ;
gotoxy(14,8) ; clreol() ;
}
} while ( !valid ) ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(1,25) ; clreol() ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,25) ;
cout <<"ENTER ANSWER FOR THE QUESTION" ;
gotoxy(14,10) ;
gets(ans1) ;
strupr(ans1) ;
if (ans1[0] == '0')
return ;
if (strlen(ans1) > 49)
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(1,25) ; clreol() ;
gotoxy(1,24) ;
cout <<"LENGTH SHOULD NOT GREATER THAN 49" ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
gotoxy(1,24) ; clreol() ;
gotoxy(1,25) ; clreol() ;
gotoxy(14,10) ; clreol() ;
}
} while ( !valid ) ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(1,25) ; clreol() ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,25) ;
cout <<"ENTER ANSWER FOR THE QUESTION" ;
gotoxy(14,12) ;
gets(ans2) ;
strupr(ans2) ;
if (ans2[0] == '0')
return ;
if (strlen(ans2) > 49)
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(1,25) ; clreol() ;
gotoxy(1,24) ;
cout <<"LENGTH SHOULD NOT GREATER THAN 49" ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
gotoxy(1,24) ; clreol() ;
gotoxy(1,25) ; clreol() ;
gotoxy(14,12) ; clreol() ;
}
} while ( !valid ) ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(1,25) ; clreol() ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,25) ;
cout <<"ENTER ANSWER FOR THE QUESTION" ;
gotoxy(14,14) ;
gets(ans3) ;
strupr(ans3) ;
if (ans3[0] == '0')
return ;
if (strlen(ans3) > 49)
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(1,25) ; clreol() ;
gotoxy(1,24) ;
cout <<"LENGTH SHOULD NOT GREATER THAN 49" ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
gotoxy(1,24) ; clreol() ;
gotoxy(1,25) ; clreol() ;
gotoxy(14,14) ; clreol() ;
}
} while ( !valid ) ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(1,25) ; clreol() ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,25) ;
cout <<"ENTER CORRECT SOLUTION FOR THE QUESTION (1/2/3)" ;
gotoxy(14,16) ;
sol = getche() ;
if (sol == '0')
return ;
if (sol != '1' && sol != '2' && sol != '3')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(14,16) ; clreol() ;
}
} while ( !valid ) ;
gotoxy(1,25) ; clreol() ;
gotoxy(1,24) ; clreol() ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,19) ;
cout <<"Do you want to save the record (y/n) : " ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(42,19) ;
ch = getche() ;
ch = toupper(ch) ;
if (ch == '0')
return ;
if (ch != 'Y' && ch != 'N')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(42,19) ; clreol() ;
}
} while ( !valid ) ;
if (ch == 'Y')
{
ques_no = t_ques_no ;
fstream file ;
file.open(filename, ios::app ) ;
file.write((char *) this, sizeof(quiz)) ;
file.close() ;
t_ques_no++ ;
}
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,21) ;
cout <<"Do you want to add more questions (y/n) : " ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(45,21) ;
ch = getche() ;
ch = toupper(ch) ;
if (ch == '0')
return ;
if (ch != 'Y' && ch != 'N')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(45,21) ; clreol() ;
}
} while ( !valid ) ;
} while (ch == 'Y') ;
}

//**********************************************************
// CLASS NAME : quiz
// FUNCTION NAME : found_record
// DETAILS : IT SEARCH THE GIVEN RECORDS IN THE
// GIVEN FILE AND RETURN 0 IF NOT FOUND
//**********************************************************

int quiz :: found_record(char filename[13], int t_ques_no)
{
fstream file ;
file.open(filename, ios::in) ;
file.seekg(0,ios::beg) ;
int found=0 ;
while (file.read((char *) this, sizeof(quiz)))
{
if (t_ques_no == ques_no)
{
found++ ;
break ;
}
}
file.close() ;
return found ;
}


//**********************************************************
// CLASS NAME : quiz
// FUNCTION NAME : display_record
// DETAILS : IT DISPLAY THE RECORD FOR THE GIVEN
// QUESTION NO. FROM THE GIVEN FILE
//**********************************************************

void quiz :: display_record(char filename[13], int t_ques_no)
{
fstream file ;
file.open(filename, ios::in) ;
file.seekg(0,ios::beg) ;
while (file.read((char *) this, sizeof(quiz)))
{
if (t_ques_no == ques_no)
{
gotoxy(3,3) ;
cout <<"question # " <<t_ques_no ;
gotoxy(3,7) ;
cout <<"question : " <<ques ;
gotoxy(3,8) ;
cout <<"answer 1 : " <<ans1 ;
gotoxy(3,9) ;
cout <<"answer 2 : " <<ans2 ;
gotoxy(3,10) ;
cout <<"answer 3 : " <<ans3 ;
break ;
}
}
file.close() ;
}


//**********************************************************
// CLASS NAME : quiz
// FUNCTION NAME : delete_record
// DETAILS : IT DELETE THE RECORD FOR THE GIVEN
// QUESTION NO. FROM THE GIVEN FILE
//**********************************************************

void quiz :: delete_record(char filename[13], int t_ques_no)
{
fstream file ;
file.open(filename, ios::in) ;
fstream temp ;
temp.open("temp.dat", ios:ut) ;
file.seekg(0,ios::beg) ;
while (!file.eof())
{
file.read((char *) this, sizeof(quiz)) ;
if ( file.eof() )
break ;
if (ques_no != t_ques_no)
temp.write((char *) this, sizeof(quiz)) ;
}
file.close() ;
temp.close() ;
file.open(filename, ios:ut) ;
temp.open("temp.dat", ios::in) ;
temp.seekg(0,ios::beg) ;
t_ques_no = 1 ;
while (!temp.eof())
{
temp.read((char *) this, sizeof(quiz)) ;
ques_no = t_ques_no ;
if (temp.eof())
break ;
file.write((char *) this, sizeof(quiz)) ;
t_ques_no++ ;
}
file.close() ;
temp.close() ;
}


//**********************************************************
// CLASS NAME : quiz
// FUNCTION NAME : deletion
// DETAILS : IT GIVE THE QUESTION NO. TO DELETE
// RECORD FROM THE GIVEN FILE
//**********************************************************

void quiz :: deletion(char filename[13])
{
lines line ;
clrscr() ;
int valid ;
int t_ques_no=0, t;
char t1_ques_no[5] ;
char ch ;
line.box(1,1,79,23,218) ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,3) ;
cout <<"Enter question no. to be deleted : " ;
do
{
gotoxy(38,3) ;
gets(t1_ques_no) ;
} while (strlen(t1_ques_no) == 0) ;
t = atoi(t1_ques_no) ;
t_ques_no = t ;
if (t1_ques_no[0] == '0')
return ;
if (!found_record(filename,t_ques_no))
{
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(3,15) ;
cout <<"question not found" ;
line.line_hor(1,79,24,196) ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
return ;
}
clrscr() ;
line.box(1,1,79,23,218) ;
display_record(filename,t_ques_no) ;
gotoxy(3,12) ;
cout <<"Do you want to delete this Record (y/n) : " ;
do
{
valid = 1 ;
gotoxy(45,12) ;
ch = getche() ;
ch = toupper(ch) ;
if (ch != 'Y' && ch != 'N')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(45,10) ; clreol() ;
}
} while (!valid ) ;
if (ch == 'N')
return ;
gotoxy(1,25) ;
cout <<"Wait..." ;
delete_record(filename,t_ques_no) ;
clrscr() ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(3,14) ;
cout <<"Record Deleted" ;
line.line_hor(1,79,24,196) ;
gotoxy(1,25) ;
cout <<"Press any key to continue...." ;
getch() ;
}


//**********************************************************
// CLASS NAME : quiz
// FUNCTION NAME : modify_record
// DETAILS : IT MODIFY THE RECORD FOR THE GIVEN
// QUESTION NO. FROM THE GIVEN FILE
//**********************************************************


void quiz :: modify_record(char filename[13], int t_ques_no)
{
lines line ;
int valid, modified=0 ;
char ch ;
line.line_hor(2,78,12,196) ;
line.box(1,1,79,23,218) ;
gotoxy(3,14) ;
cout <<"QUESTION # " <<t_ques_no ;
gotoxy(3,16) ;
cout <<"QUESTION : " ;
gotoxy(3,17) ;
cout <<"ANSWER 1 : " ;
gotoxy(3,18) ;
cout <<"ANSWER 2 : " ;
gotoxy(3,19) ;
cout <<"ANSWER 3 : " ;
gotoxy(3,20) ;
cout <<"SOLUTION : " ;
gotoxy(1,25) ; clreol() ;
line.line_hor(1,79,23,196) ;
gotoxy(14,16) ;
cout <<"Change (y/n) " ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(28,16) ;
ch = getche() ;
ch = toupper(ch) ;
if (ch != 'Y' && ch != 'N')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(28,16) ; clreol() ;
}
} while (!valid) ;
valid = 0 ;
while (!valid && ch == 'Y')
{
line.box(1,1,79,23,218) ;
modified = 1 ;
valid = 1 ;
gotoxy(14,16) ; clreol() ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,25) ;
cout <<"ENTER QUESTION" ;
gotoxy(14,16) ;
gets(ques) ;
strupr(ques) ;
if (ques[0] == '0')
return ;
if (strlen(ques) >159 || strlen(ques) == 0)
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(1,25) ; clreol() ;
gotoxy(1,24) ;
cout <<"LENGTH SHOULD NOT BLANK OR GREATER THAN 159" ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
gotoxy(1,24) ; clreol() ;
gotoxy(1,25) ; clreol() ;
gotoxy(14,16) ; clreol() ;
}
}
gotoxy(1,25) ; clreol() ;
gotoxy(14,17) ;
cout <<"Change (y/n) " ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(28,17) ;
ch = getche() ;
ch = toupper(ch) ;
if (ch != 'Y' && ch != 'N')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(28,17) ; clreol() ;
}
} while (!valid) ;
valid = 0 ;
while (!valid && ch == 'Y')
{
line.box(1,1,79,23,218) ;
modified = 1 ;
valid = 1 ;
gotoxy(13,17) ; clreol() ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,25) ;
cout <<"ENTER ANSWER FOR THE QUESTION" ;
gotoxy(14,17) ;
gets(ans1) ;
strupr(ans1) ;
if (ans1[0] == '0')
return ;
if (strlen(ans1) > 49)
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(1,25) ; clreol() ;
gotoxy(1,24) ;
cout <<"LENGTH SHOULD NOT GREATER THAN 49" ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
gotoxy(1,24) ; clreol() ;
gotoxy(1,25) ; clreol() ;
gotoxy(14,17) ; clreol() ;
}
}
gotoxy(1,25) ; clreol() ;
gotoxy(14,18) ;
cout <<"Change (y/n) " ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(28,18) ;
ch = getche() ;
ch = toupper(ch) ;
if (ch != 'Y' && ch != 'N')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(28,18) ; clreol() ;
}
} while (!valid) ;
valid = 0 ;
while (!valid && ch == 'Y')
{
line.box(1,1,79,23,218) ;
modified = 1 ;
valid = 1 ;
gotoxy(14,18) ; clreol() ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,25) ;
cout <<"ENTER ANSWER FOR THE QUESTION" ;
gotoxy(14,18) ;
gets(ans2) ;
strupr(ans2) ;
if (ans2[0] == '0')
return ;
if (strlen(ans2) > 49)
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(1,25) ; clreol() ;
gotoxy(1,24) ;
cout <<"LENGTH SHOULD NOT GREATER THAN 49" ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
gotoxy(1,24) ; clreol() ;
gotoxy(1,25) ; clreol() ;
gotoxy(14,18) ; clreol() ;
}
}
gotoxy(1,25) ; clreol() ;
gotoxy(14,19) ;
cout <<"Change (y/n) " ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(28,19) ;
ch = getche() ;
ch = toupper(ch) ;
if (ch != 'Y' && ch != 'N')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(28,19) ; clreol() ;
}
} while (!valid) ;
valid = 0 ;
while (!valid && ch == 'Y')
{
line.box(1,1,79,23,218) ;
modified = 1 ;
valid = 1 ;
gotoxy(14,19) ; clreol() ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,25) ;
cout <<"ENTER ANSWER FOR THE QUESTION" ;
gotoxy(14,19) ;
gets(ans3) ;
strupr(ans3) ;
if (ans3[0] == '0')
return ;
if (strlen(ans3) > 49)
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(1,25) ; clreol() ;
gotoxy(1,24) ;
cout <<"LENGTH SHOULD NOT GREATER THAN 49" ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
gotoxy(1,24) ; clreol() ;
gotoxy(1,25) ; clreol() ;
gotoxy(14,19) ; clreol() ;
}
}
if (!modified)
return ;
do
{
line.box(1,1,79,23,218) ;
gotoxy(1,25) ; clreol() ;
valid = 1 ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,25) ;
cout <<"ENTER CORRECT SOLUTION FOR THE QUESTION (1/2/3)" ;
gotoxy(14,20) ;
sol = getche() ;
if (sol == '0')
return ;
if (sol != '1' && sol != '2' && sol != '3')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(14,20) ; clreol() ;
}
} while (!valid) ;
gotoxy(1,25) ; clreol() ;
gotoxy(1,24) ; clreol() ;
gotoxy(1,22) ;
cout <<"Do you want to save the record (y/n) : " ;
do
{
line.box(1,1,79,23,218) ;
valid = 1 ;
gotoxy(41,22) ;
ch = getche() ;
ch = toupper(ch) ;
if (ch != 'Y' && ch != 'N')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(41,22) ; clreol() ;
}
} while ( !valid ) ;
if (ch == 'N')
return ;
fstream file ;
file.open(filename, ios:ut | ios::ate) ;
int recno ;
recno = t_ques_no ;
int location ;
location = (recno-1) * sizeof(quiz) ;
file.seekp(location) ;
file.write((char *) this, sizeof(quiz)) ;
file.close() ;
clrscr() ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(1,14) ;
cout <<"Record Modified" ;
line.line_hor(1,79,24,196) ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
}


//**********************************************************
// CLASS NAME : quiz
// FUNCTION NAME : modify
// DETAILS : IT GIVE THE QUESTION NO. TO MODIFY
// RECORD FROM THE GIVEN FILE
//**********************************************************


void quiz :: modify(char filename[13])
{
lines line ;
clrscr() ;
int valid ;
int t_ques_no=0, t;
char t1_ques_no[5] ;
char ch ;
line.box(1,1,79,23,218) ;
gotoxy(72,25) ;
cout <<"<0>=EXIT" ;
gotoxy(3,3) ;
cout <<"Enter question no. to be modify : " ;
do
{
gotoxy(38,3) ;
gets(t1_ques_no) ;
} while (strlen(t1_ques_no) == 0) ;
t = atoi(t1_ques_no) ;
t_ques_no = t ;
if (t1_ques_no[0] == '0')
return ;
if (!found_record(filename,t_ques_no))
{
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(3,15) ;
cout <<"question not found" ;
line.line_hor(2,78,24,196) ;
gotoxy(1,25) ;
cout <<"Press any key to continue..." ;
getch() ;
return ;
}
clrscr() ;
display_record(filename,t_ques_no) ;
gotoxy(3,12) ;
cout <<"Do you want to modify this Record (y/n) : " ;
do
{
valid = 1 ;
gotoxy(45,12) ;
ch = getche() ;
ch = toupper(ch) ;
if (ch != 'Y' && ch != 'N')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(45,10) ; clreol() ;
}
} while (!valid ) ;
if (ch == 'N')
return ;
modify_record(filename,t_ques_no) ;
}


//**********************************************************
// CLASS NAME : quiz
// FUNCTION NAME : display_score
// DETAILS : IT DISPLAY THE SCORE FOR THE GIVEN
// PLAYER'S NAME
//**********************************************************


void quiz :: display_score(char name[20], int played, int correct)
{
clrscr() ;
lines line ;
line.box(1,1,39,25,218) ;
line.box(2,2,38,24,219) ;
textbackground(WHITE) ;
textcolor(BLACK+BLINK) ;
gotoxy(5,4) ;
cprintf(" ") ;
gotoxy(9,4) ;
cprintf("S C O R E B O A R D") ;
textbackground(BLACK) ;
textcolor(LIGHTGRAY) ;
gotoxy(5,7) ;
cout <<"Player's Name : " <<name ;
gotoxy(5,9) ;
cout <<"questions Attempted : " <<played ;
gotoxy(5,11) ;
cout <<"Correct answer : " <<correct ;
gotoxy(5,13) ;
cout <<"Wrong answer : " <<played-correct ;
int score ;
score = correct * 10 ;
gotoxy(5,16) ;
cout <<"Score : " <<score ;
int tplayed ;
tplayed = played * 10 ;
float percentage ;
percentage = ((score*100)/tplayed) ;
gotoxy(5,18) ;
cout <<"Percentage : " <<percentage ;
getch() ;
}


//**********************************************************
// CLASS NAME : quiz
// FUNCTION NAME : play
// DETAILS : IT CREATES SCREEN FOR PLAYING QUIZ
// TO THE PLAYER FOR THE GIVEN FILE NAME
// AND KEEP SCORE.
//**********************************************************


void quiz :: play(char filename[13])
{
clrscr() ;
int valid ;
lines line ;
char name[20] ;
gotoxy(3,3) ;
cout <<"Enter your name : " ;
do
{
line.box(1,1,39,25,219) ;
valid = 1 ;
gotoxy(30,24) ;
cout <<"<0>=EXIT" ;
gotoxy(21,3) ;
gets(name) ;
strupr(name) ;
if (name[0] == '0')
return ;
if (strlen(name) > 18)
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(30,24) ;
cout <<" " ;
gotoxy(3,23) ;
cout <<"LENGTH SHOULD NOT GREATER THAN 18" ;
gotoxy(3,24) ;
cout <<"Press any key to continue..." ;
getch() ;
gotoxy(3,23) ;
cout <<" " ;
gotoxy(3,24) ;
cout <<" " ;
gotoxy(21,3) ;
cout <<" " ;
}
} while ( !valid ) ;
char t_sol, ch ;
int correct=0, played=0 ;
fstream file ;
file.open(filename,ios::in) ;
file.seekg(0,ios::beg) ;
while (file.read((char *) this, sizeof(quiz)))
{
clrscr() ;
line.box(1,1,39,25,219) ;
gotoxy(25,3) ;
cout <<"SCORE:" <<correct*10 ;
valid = 1 ;
gotoxy(28,24) ;
cout <<"<ESC>=Exit" ;
gotoxy(3,4) ;
cout <<"question # " <<ques_no ;
gotoxy(3,6) ;
cout <<"question : " <<ques ;
gotoxy(3,10) ;
cout <<"answer 1 : " <<ans1 ;
gotoxy(3,11) ;
cout <<"answer 2 : " <<ans2 ;
gotoxy(3,12) ;
cout <<"answer 3 : " <<ans3 ;
gotoxy(3,14) ;
cout <<"Enter correct solution : " ;
int i=0, j=0, time=20 ;
do
{
valid = 1 ;
gotoxy(3,21) ;
cout <<"Time : " <<time ;
gotoxy(28,12) ;
do
{
delay(1) ;
i++ ;
j++ ;
if (j == 600)
{
j = 0 ;
time-- ;
gotoxy(11,21) ;
cout <<" " ;
gotoxy(10,21) ;
cout <<time ;
gotoxy(28,14) ;
}
} while (!kbhit() && i<6000) ;
if (i >= 6000)
{
played++ ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(13,16) ;
cout <<"Sorry Time up!" ;
gotoxy(1,1) ;
getch() ;
if (played)
display_score(name,played,correct) ;
return ;
}
gotoxy(3,21) ;
cout <<" " ;
gotoxy(28,12) ;
t_sol = getche() ;
if (t_sol == 27)
{
if (played)
display_score(name,played,correct) ;
return ;
}
if (t_sol != '1' && t_sol != '2' && t_sol != '3')
{
valid = 0 ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(28,12) ;
cout <<" " ;
}
} while (!valid) ;
played++ ;
if (t_sol != sol)
{
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(14,16) ;
cout <<"wrong answer" ;
gotoxy(13,17) ;
cout <<"Correct answer : " <<sol ;
gotoxy(1,1) ;
ch = getch() ;
gotoxy(14,15) ;
cout <<" " ;
gotoxy(13,16) ;
cout <<" " ;
gotoxy(3,24) ;
cout <<" " ;
}
else
{
correct++ ;
sound(500) ;
delay(100) ;
nosound() ;
gotoxy(16,16) ;
cout <<"GOOD ! CORRECT ANSWER" ;
gotoxy(25,3) ;
cout <<"SCORE:" <<correct*10 ;
gotoxy(1,1) ;
ch = getch() ;
}
if (ch == 27)
{
display_score(name,played,correct) ;
return ;
}
}
gotoxy(3,22) ;
cout <<"No more questions available" ;
getch() ;
if (!played)
return ;
display_score(name,played,correct) ;
}


//**********************************************************
// FUNCTION NAME : main
// DETAILS : IT CALLS THE START FUNCTION AND
// MENU FUNCTION.
//**********************************************************


void main(void)
{
menu m ;
m.start() ;
m.main_menu() ;
}


//**********************************************************
// END OF PROJECT
//**********************************************************

 

500 Lines of unformatted code...

Next time please post with the

Code:

 tag around it and make it a bit more legible.

 

Plz reply

 

that is way too long man

 

Did u actually do that much by yourself?

 

Like I stated - if you want some help, put some effort in and allow us to help you.

Otherwise, take a look at my paid help in my sig for java - I do c++ as well but you will need to help for such scruffy code.