This document contains C++ code for a banking application. It defines several classes - shape for drawing boxes and lines, control for the application menu, initial for initial deposit functions, and account for transaction functions. The classes contain functions for tasks like displaying menus, adding/deleting accounts from files, calculating interest, and performing deposits/withdrawals. The main function calls help and main menu functions to start the application.

1. #include<iostream.h>
#include<fstream.h>
#include<process.h>
#include<string.h>
#include<stdlib.h>
#include<stdio.h>
#include<ctype.h>
#include<conio.h>
#include<dos.h>
//===========================================================
// THIS CLASS CONTAINS FUNCTIONS RELATED TO DRAW BOX ETC.
//===========================================================
class shape
{
public :
void line_hor(int, int, int, char);
void line_ver(int, int, int, char);
void box(int,int,int,int,char);
};
//===========================================================
// THIS CLASS CONTROL ALL THE FUNCTIONS IN THE MENU
//===========================================================
class control
{
public :
void main_menu(void);
void help(void);
private:
void edit_menu(void);
};
//===========================================================
// THIS CLASS CONTAINS FUNCTIONS RELATED TO INITIAL DEPOSIT
//===========================================================
class initial
{
public :
void add_to_file(int,char t_name[30],char t_address[60],float);
void display_list(void);
void delete_account(int);
void update_balance(int,float);
void modify(void);
int last_accno(void);
int found_account(int);
char *return_name(int);
char *return_address(int);
float give_balance(int);
int recordno(int);
void display(int);
private:
void modify_account(int,char t_name[30],char t_address[60]);
void box_for_list(void);
int accno;
char name[30],address[60];
float balance;
};
//===========================================================

2. // THIS CLASS CONTAINS FUNCTIONS RELATED TO TRANSACTIONS
//===========================================================
class account
{
public :
void new_account(void);
void close_account(void);
void display_account(void);
void transaction(void);
void clear(int,int);
private :
void add_to_file(int,int,int,int,char,char t_type[10],float,float,float);
void delete_account(int);
int no_of_days(int,int,int,int,int,int);
float calculate_interest(int,float);
void display(int);
void box_for_display(int);
int accno;
char type[10]; //Cheque or Cash
int dd,mm,yy; //Date
char tran ; // Deposit or withdrawl
float interest,amount,balance;
};
//===========================================================
// FUNCTION TO DRAW HORIZONTAL LINE
//===========================================================
void shape::line_hor(int column1,int column2,int row,char c)
{
for(column1;column1< =column2;column1++)
{
gotoxy(column1,row);
cout< }
}
//===========================================================
// FUNCTION TO DRAW VERTICAL LINE
//===========================================================
void shape::line_ver(int row1,int row2,int column,char c)
{
for(row1;row1 {
gotoxy(column,row1);
cout< }
}
//============================================================
// FUNCTION TO DRAW BOX LINE
//============================================================
void shape::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;

3. l2=179;
}
else
{
c1=c;
c2=c;
c3=c;
c4=c;
l1=c;
l2=c;
}
gotoxy(column1,row1);
cout< gotoxy(column2,row1);
cout< gotoxy(column1,row2);
cout< gotoxy(column2,row2);
cout< 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);
}
//============================================================
// FUNCTION TO DISPLAY MAIN MENU AND CALL OTHER FUNCTIONS
//============================================================
void control::main_menu(void)
{
char ch;
while (1)
{
clrscr();
shape s;
s.box(10,5,71,21,219);
s.box(9,4,72,22,218);
textcolor(LIGHTBLUE+BLINK);
textbackground(BLACK);
gotoxy(32,7);
cprintf(– B A N K I N G –);
gotoxy(35,9);
cprintf(– OPTIONS –);
textcolor(LIGHTBLUE);
textbackground(BLACK);
gotoxy(30,11);
cout<=EXIT–;
gotoxy(5,5);
cout< =EXIT–;
textbackground(BLACK);
gotoxy(3,3);
for(int i=1;i< =76;i++) cprintf(– –);
textbackground(BLACK);
textcolor(LIGHTBLUE+BLINK); textbackground(BLACK);
gotoxy(30,3);
cprintf(–MODIFY ACCOUNT SCREEN–);
textcolor(LIGHTBLUE); textbackground(BLACK);
int d1,m1,y1;
struct date d;
getdate(&d);
d1=d.da_day;

4. m1=d.da_mon;
y1=d.da_year;
gotoxy(62,5);
cout< char ch;
display(t_accno);
account a;
do
{
a.clear(5,13);
gotoxy(5,13);
cout< FOR NO CHANGE–;
valid=1;
gotoxy(15,15);
gets(t_name);
strupr(t_name);
if(t_name[0]==–0')
return;
if(strlen(t_name)>25)
{
valid=0;
gotoxy(5,23);
cprintf(–7NAME SHOULD NOT GREATER THAN 25?);
getch();
}
}while(!valid);
if(strlen(t_name)>0)
modified=1;
do
{
a.clear(15,16);
a.clear(5,23);
gotoxy(5,23);
cout< FOR NO CHANGE–;
valid=1;
gotoxy(15,16);
gets(t_address);
strupr(t_address);
if(t_address[0]==–0')
return;
if(strlen(t_address)>55)
{
valid=0;
gotoxy(5,23);
cprintf(–7SHOULD NOT BLANK OR GREATER THAN 55?);
getch();
}
}while(!valid);
if(strlen(t_address)>0)
modified=1;
if(!modified)
return;
a.clear(5,23);
do
{
a.clear(5,18);
gotoxy(5,18);
cout< =EXIT–;
textbackground(BLACK);
gotoxy(3,3);
for(i=1;i< =76;i++)
cprintf(– –);
textbackground(BLACK);
textcolor(LIGHTBLUE+BLINK); textbackground(BLACK);
gotoxy(32,3);

5. cprintf(–OPEN NEW ACCOUNT–);
textcolor(LIGHTBLUE);
textbackground(BLACK);
int d1,m1,y1;
struct date d;
getdate(&d);
d1=d.da_day;
m1=d.da_mon;
y1=d.da_year;
int t_accno;
t_accno=ini.last_accno();
t_accno++;
if(t_accno==1)
{
ini.add_to_file(t_accno,–abc–,–xyz–,1.1);
ini.delete_account(t_accno);
add_to_file(t_accno,1,1,1997,–D',–INITIAL–,1.1,1.1,1.1);
delete_account(t_accno);
}
char t_name[30],t[10],t_address[60];
float t_bal=0.0, t_balance=0.0;
gotoxy(5,6);
cout< gotoxy(5,8);
cout<=EXIT–;
gotoxy(5,5);
cout< =EXIT–;
gotoxy(5,5);
cout< =EXIT–;
textbackground(BLACK);
gotoxy(3,3);
for(int i=1;i< =76;i++) cprintf(– –);
textbackground(BLACK);
textcolor(LIGHTBLUE+BLINK); textbackground(BLACK);
gotoxy(29,3);
cprintf(–TRANSACTION IN ACCOUNT–);
textcolor(LIGHTBLUE); textbackground(BLACK);
int d1,m1,y1;
struct date d;
getdate(&d);
d1=d.da_day;
m1=d.da_mon;
y1=d.da_year;
gotoxy(5,6);
cout<=EXIT–;
gotoxy(5,5);
cout< =EXIT–;
textbackground(BLACK);
gotoxy(3,3);
for(int i=1;i< =76;i++) cprintf(– –);
textbackground(BLACK);
textcolor(GREEN+BLINK); textbackground(BLACK);
gotoxy(30,3);
cprintf(–CLOSE ACCOUNT SCREEN–);
textcolor(LIGHTBLUE); textbackground(BLACK);
int d1,m1,y1;
struct date d;
getdate(&d);
d1=d.da_day;
m1=d.da_mon;
y1=d.da_year;
gotoxy(62,5);
cout< getch();
}

6. //===============================================================
//THIS IS MAIN FUNCTION CALLING HELP AND MAIN MENU
//FUNCTIONS
//===============================================================
void main(void)
{
control c;
c.help();
c.main_menu();
}