Tuesday, May 6, 2008

Telephone biling project' developed in c++


// TELEPHONE BILLING //

// HEADER FILES

#include
#include
#include
#include
#include
#include
#include
#include


// CLASS HAVING THE RECORD OF CUSTOMER
class customer
{
char ph[10];
char name[30];
char add[40];
char type;
public :
void append();
void display();
void deleter();
void modify();
void list();
void help();
}cust;


// FUNCTION TO DISPLAY THE MESSAGE AT THE BOTTOM OF THE SCREEN

void message(char mess[80])
{
int l,d;
l=strlen(mess);
d=l/2;
gotoxy(2,24);
textcolor(WHITE+BLINK);
textbackground(BLACK);
cprintf(" ");
gotoxy(40-d,24);
clreol();
cprintf("%s",mess);
textcolor(BLACK);
textbackground(WHITE);
}


// MAIN FUNCTION HAVING THE MAIN MENU

void main()
{
textcolor(BLACK);
textbackground(WHITE);
char ch,ch1;
while(1)
{
clrscr();
textcolor(WHITE);
textbackground(BLACK);
gotoxy(25,5);
cprintf("MAHANAGAR TELEPHONE NIGAM LTD.");
textcolor(BLACK);
textbackground(WHITE);
gotoxy(25,8);
cout<<" D - Display a Bill";
gotoxy(25,10);
cout<<" L - List of customers";
gotoxy(25,12);
cout<<" H - Help";
gotoxy(25,14);
cout<<" M - Modify a record";
gotoxy(25,16);
cout<<" Q - Quit";
message("Select your choice");
gotoxy(40,18);
ch =getch();
ch = toupper(ch);
switch(ch)
{
case ('Q') : textcolor(WHITE);
textbackground(BLACK);
clrscr();
exit(1);
case ('D') : cust.display();
break;
case ('L') : cust.list();
break;
case ('H') : cust.help();
break;
case ('M') :
ch1 = 'A' ;
while(ch1 != 'Q')
{
clrscr();
textcolor(WHITE);
textbackground(BLACK);
gotoxy(25,5);
cprintf("MAHANAGAR TELEPHONE NIGAM LTD.");
textcolor(BLACK);
textbackground(WHITE);
gotoxy(25,9);
cout<<" A - Append a record";
gotoxy(25,11);
cout<<" D - Delete a record";
gotoxy(25,13);
cout<<" M - Change a record";
gotoxy(25,15);
cout<<" Q - Quit";
message("Select your option");
ch1 = getch();
ch1 = toupper(ch1);
switch(ch1)
{
case ('A') : cust.append();
break;
case ('D') : cust.deleter();
break;
case ('M') : cust.modify();
break;
}
}

}
}
}


// FUNCTION TO ADD THE CUSTOMER RECORD IN THE FILE

void customer :: append()
{
char choice;
fstream fp;
fp.open("tphone.dat", ios::app);
if (!fp)
{
cout<<"Unable to open FILE.";
getch();
return;
}
while(1)
{
clrscr();
gotoxy(3,3);
cout<<"Customer Record #";
message("Enter the customer record");
while(1)
{
message("Enter the name");
gotoxy(3,5);
cout<<"Name : ";
gotoxy(25,5);
gets(name);
if(strlen(name)==0)
{
gotoxy(2,23);
clreol();
textcolor(WHITE+BLINK);
textbackground(BLACK);
cprintf("Name cannot be left blank\a");
textcolor(BLACK);
}
else
break;
}
while(1)
{
message("Enter the address");
gotoxy(3,6);
cout<<"Address : ";
gotoxy(25,6);
gets(add);
if (strlen(add) != 0)
break;
}

while(1)
{
gotoxy(3,7);
cout<<"Assigned Ph. No. : ";
gotoxy(25,7);
cin>>ph;
if (ph != 0 )
break;
else
{
gotoxy(25,7);
clreol();
}
}
message("Enter O for Office and R for residential phone");
gotoxy(3,8);
cout<<"catagory ( O/R ) : ";
cin>>type;
gotoxy(4,10);
cout<<"1 : Save & Exit 2 : Save & Cont. 0 : Exit without save";
gotoxy(4,11);
cout<<"? ";
cin>>choice;
switch(choice)
{
case ('1') : fp.write((char *) this,sizeof(cust));
fp.close();
return;
case ('2') : fp.write((char *) this,sizeof(cust));
break;
case ('0') : fp.close();
return;
default : fp.close();
return;
}
}
}


// FUNCTION TO DISPLAY THE CUSTOMER RECORD AND CALCULATE THE BILL
void customer :: display()
{
char p[10];
char choice;
int found=0;
int no;
float bill=0.0, tax=0.0, fine=0.0, bbill=0.0, abill=0.0;
fstream fp;
fp.open("tphone.dat", ios::in);
if (!fp)
{
cout<<"Unable to open a file";
getch();
fp.close();
return;
}
while(choice != '0')
{
clrscr();
gotoxy(3,20);
cout<<"Please enter the Phone No. ";
cin>>p;
if (!strcmp(p,"0"))
return;
found = 0;
fp.seekg(0);
while (fp.read((char *)this ,sizeof(cust)))
{
if (found==1)
break;
if (!strcmp(ph,p))
{
clrscr();
gotoxy(28,2);
textcolor(BLACK+BLINK) ;
textbackground(WHITE);
cprintf("MAHANAGAR TELEPHONE BILL");
textcolor(WHITE);
textbackground(BLACK);
gotoxy(3,4);
cout<<"Name : ";
cout<
gotoxy(35,5);
cout<<"Address : ";
cout<
gotoxy(35,4);
cout<<"Assigned Ph. No. : ";
cout<
gotoxy(3,5);
cout<<"Catagory ( O/R ) : ";
cout<
gotoxy(23,8);
cout<<"___________";
gotoxy(10,8);
cout<<"No. of calls ";
cin>>no;
if ( no <= 150 )
bill = 0 ;
else
{
no = no - 150;
if (toupper(type) == 'O')
bill = no * 1.00 ;
else
bill = no * .80;
}
gotoxy(10,9);
cout<<"Bill";
gotoxy(70,9);
cout<
tax = (5*bill)/100;
gotoxy(10,10 );
cout<<"5% Tax";
gotoxy(70,10);
cout<
gotoxy(10,11);
cout<<"Duties";
gotoxy(70,11);
cout<<"100";
int dd,mm,yy;
struct date d; // Getting system Date
getdate(&d);
dd = d.da_day;
mm = d.da_mon;
yy = d.da_year;
gotoxy(10,15) ;
cout<<"TOTAL BILL before " ;
cout<
<<"/"<<<"/"<
bbill = bill+tax+100;
gotoxy(70,15);
cout<
gotoxy(10,17);
cout<<"Late Fine";
fine = (bbill*5)/100;
gotoxy(70,17);
cout<
gotoxy(10,21);
cout<<"TOTAL BILL after ";
cout<
<<"/"<<<"/"<
abill = bbill+fine;
gotoxy(70,21);
cout<
found = 1;
message("Press a Key");
getch();
}
}
message("Enter 1 or 2 to cont.");
gotoxy(4,22);
cout<<"1 : Cont. 0 : Exit ";
cout<<"? ";
cin>>choice;
switch(choice)
{
case ('1') :
break;
case ('0') : return;
default : return;
}

}
fp.close();
}


// FUNCTION TO DISPLAY THE LIST OF THE CUSTOMERS

void customer :: list()
{
clrscr();
fstream fp;
int r;
fp.open("tphone.dat", ios::in);
if (!fp)
{
cout<<"Unable to open";
getch();
fp.close();
return;
}
gotoxy(35,2);
cout<<"List of Customers";
gotoxy(35,3);
cout<<"*****************";
gotoxy(5,4);
cout<<"Name";
gotoxy(40,4);
cout<<"Phone No.";
gotoxy(65,4);
cout<<"Catagory";
gotoxy(1,5);
cout<<"*******************************************************************************";
r=6;
while (fp.read((char *) this, sizeof(cust)))
{
if (r >= 21)
{
message("Press a key");
getch();
clrscr();
gotoxy(35,2);
cout<<"List of customers";
gotoxy(35,3);
cout<<"*****************";
gotoxy(5,4);
cout<<"Name";
gotoxy(40,4);
cout<<"Phone No.";
gotoxy(65,4);
cout<<"Catagory";
gotoxy(1,5);
cout<<"*******************************************************************************";
r=6;
}
gotoxy(5,r);
cout<
gotoxy(40,r);
cout<
gotoxy(65,r);
if (toupper(cust.type) == 'O')
cout<<"Office";
else
cout<<"Residential";
r++;
}
message("Press a key");
getch();
fp.close();
}


// FUNCTION TO DELETE THE RECORD OF CUSTOMER FROM THE FILE

void customer :: deleter()
{
char ch;
char p[10];
fstream temp,fp;
fp.open("tphone.dat", ios::in);
if (!fp)
{
cout<<"Unable to open Telephone file";
getch();
fp.close();
return;
}
temp.open("temp.dat", ios::out);
if (!temp)
{
cout<<"Unable to open Temporary file";
getch();
temp.close();
return;
}
clrscr();
gotoxy(5,3);
cout<<"Enter the Phone No. to be deleted : ";
cin>>p;
if(!strcmp(p,"0"))
return;
int found=0;
while (fp.read((char *) this, sizeof(cust)))
{
if (!strcmp(p,ph))
{
found = 1;
gotoxy(5,5);
cout<<"Name "<
gotoxy(5,6);
cout<<"Address " <
gotoxy(5,7);
cout<<"Catagory "<
gotoxy(6,10);
cout<<"Delete this record (Y/N) ";
cin>>ch;
if (toupper(ch) == 'N')
temp.write((char *) this,sizeof(cust));
}
else
temp.write((char *) this,sizeof(cust));
}
fp.close();
temp.close();
if (toupper(ch) == 'N')
return;
if (!found)
{
cout<<"\n\nTelephone no. not found";
getch();
return;
}
fp.open("tphone.dat", ios::out);
temp.open("temp.dat", ios::in);
while (temp.read((char *) this, sizeof(cust)))
fp.write((char *) this, sizeof(cust));
fp.close();
temp.close();
}


// FUNCTION TO MODIFY THE RECORD OF CUSTOMER FROM THE FILE

void customer :: modify()
{
char ch;
char p[10];
fstream temp,fp;
fp.open("tphone.dat", ios::in);
if (!fp)
{
cout<<"Unable to open Telephone file";
getch();
fp.close();
return;
}
temp.open("temp.dat", ios::out);
if (!temp)
{
cout<<"Unable to open Temporary file";
getch();
temp.close();
return;
}
clrscr();
gotoxy(5,3);
cout<<"Enter the Phone No. to be Modify : ";
cin>>p;
if(!strcmp(ph,"0"))
return;
int found=0;
while (fp.read((char *) this, sizeof(cust)))
{
if (!strcmp(p,ph))
{
found = 1;
gotoxy(5,5);
cout<<"Name "<
gotoxy(5,6);
cout<<"Address " <
gotoxy(5,7);
cout<<"Catagory "<
gotoxy(6,10);
cout<<"Modify this record (Y/N) ";
cin>>ch;
if (toupper(ch) == 'Y')
{
gotoxy(3,13);
cout<<"Customer Record #";
message("Enter the customer record");
while(1)
{
gotoxy(3,15);
cout<<"Name : ";
gets(name);
if (strlen(name) != 0)
break;
}
gotoxy(3,16);
cout<<"Address : ";
gets(add);
while(1)
{
gotoxy(3,17);
cout<<"Assigned Ph. No. : ";
cin>>ph;
if (ph != 0 )
break;
}
message("Enter O for Office and R for residential phone");
gotoxy(3,18);
cout<<"catagory ( O/R ) : ";
cin>>type;
}
}
temp.write((char *) this,sizeof(cust));
}
fp.close();
temp.close();
if (toupper(ch) == 'N')
return;
if (!found)
{
cout<<"\n\nTelephone no. not found";
getch();
return;
}
fp.open("tphone.dat", ios::out);
temp.open("temp.dat", ios::in);
while (temp.read((char *) this, sizeof(cust)))
fp.write((char *) this, sizeof(cust));
fp.close();
temp.close();
}


// FUNCTION TO DISPLAY THE DISCRIPTION FOR THE PROJECT WORKING

void customer :: help()
{
clrscr();
gotoxy(35,2);
textcolor(WHITE + BLINK);
textbackground(BLACK);
cprintf(" HELP ");
textcolor(BLACK);
textbackground(WHITE);
gotoxy(8,5);
cout<<"This software is used to create a telephone bill for the customers. ";
gotoxy(8,7);
cout<<"There are two catagories of the customers. First catagories is of";
gotoxy(8,9);
cout<<"Residential phones and second catagories is of Office phones. Both";
gotoxy(8,11);
cout<<"the catagories have different charges of the telephone bill. Charges";
gotoxy(8,13);
cout<<"of residential phones are 80 Paise per call and Charges of Office ";
gotoxy(8,15);
cout<<"office phones are Rs. 1 per call. 150 call are free for each catogory";
gotoxy(8,17);
cout<<"Total bill for is equal to 5% tax plus 100 rupees charges for other";
gotoxy(8,19);
cout<<"charges. If bill is not paid before the paticular date then penalty ";
gotoxy(8,21);
cout<<"should also be given.";
getch();
}

No comments:

Post a Comment