Code:
#include <stdio.h>
#include <conio.h>
#include <string.h>
#include <process.h>
#include <ctype.h>
#include <fstream.h>
class customer
{
char ph[10];
char name[30];
char add[40];
char type;
public :
void append();
void display();
void del();
void modify();
void list();
void help();
}cust;
void customer::append()
{
char choice;
fstream f;
f.open("tphone.dat", ios::app);
if (!f)
{ cout<<"\n Unable to open FILE.";
getch();
return;
}
while(1)
{ clrscr();
cout<<"\n\n***********************************************************************";
cout<<"\n CUSTOMER RECORD";
cout<<"\n\n***********************************************************************";
while(1)
{ cout<<"\n\tEnter the name";
cout<<"\nName : ";
gets(name);
if(strlen(name)==0)
cout<<"\n\n\tName cannot be left blank\a\a";
else
break;
}
while(1)
{ cout<< "\n\tEnter the address";
cout<<"\n Address : ";
gets(add);
if (strlen(add) != 0)
break;
}
while(1)
{ cout<<"\nEnter TelePhone. No. : ";
cin>>ph;
if (ph != 0 )
break;
else
{
cout<<"\n\n\tTelePhone no. cannot be left blank\a\a";
}
}
while(1)
{ cout<< "Enter O for Office and R for residential phone";
cout<<"catagory ( O/R ) : ";
cin>>type;
if (type=='o'||type=='O'||type=='r'||type=='R')
break;
else{cout<<"\n Wrong choise...";
}
}
cout<<"\n\n**********************************************************************";
cout<<"\n 1 : Save & Exit 2 : Save & Cont. 0 : Exit without save";
cout<<"\n\n**********************************************************************";
cin>>choice;
switch(choice)
{
case ('1') : f.write((char *) this,sizeof(cust));
f.close();
return;
case ('2') : f.write((char *) this,sizeof(cust));
break;
case ('0') : f.close();
return;
default : f.close();
return;
}
}
void customer :: display()
{
char p[10];
char choice;
int found=0;
int no;
long float bill=0.0, tax=0.0, bbill=0.0,rent;
fstream f;
f.open("tphone.dat", ios::in);
if (!f)
{ cout<<"Unable to open a file";
getch();
f.close();
return;
}
while(choice != '0')
{
clrscr();
cout<<"Please enter the Phone No. ";
cin>>p;
if (!strcmp(p,"0"))
return;
found = 0;
f.seekg(0);
while (f.read((char *)this ,sizeof(cust)))
{
if (found==1)
break;
if (!strcmp(ph,p))
{
clrscr();
cout<<"\n\n===================================================";
cout<<"\n\t TELEPHONE BILL";
cout<<"\n\n===================================================";
cout<<"\n\n Name :- \t ";
cout<<name;
cout<<"\n Address :- \t ";
cout<<add;
cout<<"\n TelePhone No. :- \t ";
cout<<ph;
cout<<"\n Catagory ( O/R ) :- \t ";
cout<<type;
cout<<"\nNo. of calls :- \t ";
cin>>no;
if ( no<=150)
{if (toupper(type) == 'O')
{ bill=0;
rent=150; }
else
bill=0;rent=200;}
if( no>150)
{ no = no - 150;
if (toupper(type) == 'O')
{ bill =(no * 1.00) ; rent=150;
}
else
{bill = (no * .80);
rent=200;
}}
cout<<"\n=====================================================";
cout<<"\n Charge :";
cout<<bill;
tax = (5*bill)/100;
cout<<"\n Service tax(5% ): Rs ";
cout<<tax;
cout<<"\n Rent :- \nRs ";
cout<<rent;
cout<<"\n--------------------------------------------------------------------------------------------";
cout<<"\n\n\tTOTAL BILL : Rs " ;
bbill = bill+tax+rent;
cout<<bbill;
cout<<"\n======================================================";
found = 1;
cout<< "\n Press a Key to continue";
getch();
}
}
cout<<"\n=====================================================";
cout<<"\n\n 1 : Cont. 0 : Exit ";
cout<<"\n=====================================================";
cin>>choice;
switch(choice)
{
case ('1') :
break;
case ('0') : return;
default : return;
}}
f.close();
}
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)
{
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<<name;
gotoxy(40,r);
cout<<ph;
gotoxy(65,r);
if (toupper(cust.type) == 'O')
cout<<"Office";
else
cout<<"Residential";
r++;
}
cout<<"\n\n\nPress any key to continue ...";
getch();
fp.close();
}
void customer :: del()
{
char ch;
char p[10];
fstream tp,f;
f.open("tphone.dat", ios::in);
if (!f)
{
cout<<"Unable to open Telephone file";
getch();
f.close();
return;
}
tp.open("temp.dat", ios::out);
if (!tp)
{cout<<"Unable to open Temporary file";
getch();
tp.close();
return;
}
clrscr();
cout<<"\n\n***********************************************************************";
cout<<"\n Enter the Phone No. to be deleted : ";
cin>>p;
if(!strcmp(p,"0"))
return;
int found=0;
while (f.read((char *) this, sizeof(cust)))
{
if (!strcmp(p,ph))
{
found = 1;
cout<<"\n Name : "<<name;
cout<<"\n Address : " <<add;
cout<<"\n Catagory : "<<type;
cout<<"\n\n***********************************************************************";
cout<<"\n\n Delete this record (Y/N) ";
cin>>ch;
if (toupper(ch) == 'N')
tp.write((char *) this,sizeof(cust));
}
else
tp.write((char *) this,sizeof(cust));
}
f.close();
tp.close();
if (toupper(ch) == 'N')
return;
if (!found)
{
cout<<"\n\nTelephone no. not found";
getch();
return;
}
f.open("tphone.dat", ios::out);
tp.open("temp.dat", ios::in);
while (tp.read((char *) this, sizeof(cust)))
f.write((char *) this, sizeof(cust));
f.close();
tp.close();
}
void customer :: modify()
{
char ch;
char p[10];
fstream tp,f;
f.open("tphone.dat", ios::in);
if (!f)
{
cout<<"\n Unable to open Telephone file";
getch();
f.close();
return;
}
tp.open("temp.dat", ios::out);
if (!tp)
{
cout<<"\n Unable to open Temporary file";
getch();
tp.close();
return;
}
clrscr();
cout<<"\n\n***********************************************************************";
cout<<"\n Enter the Phone No. to be Modify : ";
cin>>p;
if(!strcmp(ph,"0"))
return;
int found=0;
while (f.read((char *) this, sizeof(cust)))
{
if (!strcmp(p,ph))
{
found = 1;
cout<<"\n\n***********************************************************************";
cout<<"\n\n Name "<<name;
cout<<"\n Address " <<add;
cout<<"\n Catagory "<<type;
cout<<"\n\n**********************************************************************";
cout<<"\n\n Modify this record (Y/N) ";
cin>>ch;
if (toupper(ch) == 'Y')
{
cout<<"\n\n***********************************************************************"; cout<<"\n CUSTOMER RECORD";
cout<< "\n Enter the customer record";
while(1)
{
cout<<"\n\n Name : ";
gets(name);
if (strlen(name) != 0)
break;
}
cout<<"\n Address : ";
gets(add);
while(1)
{
cout<<"\n Assigned Ph. No. : ";
cin>>ph;
if (ph != 0 )
break;
}
{ cout<< "Enter O for Office and R for residential phone";
cout<<"catagory ( O/R ) : ";
cin>>type;
} } }
tp.write((char *) this,sizeof(cust));
}
f.close();
tp.close();
if (toupper(ch) == 'N')
return;
if (!found)
{
cout<<"\n\n Telephone no. not found....!!";
getch();
return;
}
f.open("tphone.dat", ios::out);
tp.open("temp.dat", ios::in);
while (tp.read((char *) this, sizeof(cust)))
f.write((char *) this, sizeof(cust));
f.close();
tp.close();
}
void customer :: help()
{
clrscr();
cout<<"\n\n***********************************************************************";
cout<<"\n\n***********************************************************************";
cout<<"\n\n This program is used to create a telephone bill for the customers. ";
cout<<"\n There are two categories of the customers. First categories is of";
cout<<" \n Residential phones and second categories is of Office phones. Both";
cout<<"\n the categories have different charges of the telephone bill. Charges";
cout<<"\n of residential phones are 80 Paisa per call and Charges of Office ";
cout<<"\n office phones are Rs. 1 per call. 150 call are free for each category";
cout<<"\n Total bill for is equal to 5% tax plus and there is a fixed monthly charge ";
cout<<"\n called rent for Office customers rent is Rs.150 and for Residential customers it is Rs.200. ";
cout<<"\n CREATED BY-\n\t Anmol Shrivastava , Ankit Puri & Manish Pandey";
cout<<"\n\n***********************************************************************";
cout<<"\n\n***********************************************************************";
getch();
}
void main()
{
clrscr();
char pass[10];
cout<<"enter your password "<<endl;
for(int i=0;i<5;i++)
{
pass[i]=getch();
cout<<"*";
}
if(strcmp(pass,"password")==0)
{
cout<<endl;
char ch,ch1;
while(1)
{
cout<<"****************************************************************************";
cout<<"\n\t\t\t BHARAT SANCHAR NIGAM LIMITED (B.S.N.L)";
cout<<"\n\n***********************************************************************";
cout<<"\n\n\n\n\n\t\t D - Display a Bill";
cout<<"\n\n\t\t L - List of customers";
cout<<"\n\n\t\t H - Help";
cout<<"\n\n\t\t R - Enter \ Modify a record";
cout<<"\n\n\t\t Q - Quit";
cout<<"\nEnter your choise :";
cin>>ch;
ch = toupper(ch);
switch(ch)
{
case ('Q') :clrscr();
cout<<"***************************************************************************";
cout<<" \n\n\t Thank you for using Hybrid telephone billing program\n\n\n"; cout<<"Good Bye \n\n\t";
cout<<"\n\n\n CREATED BY- Ankit Puri , Anmol Shrivastava & Manish Pandey ";
cout<<"\n\n***********************************************************************";
getch();
exit(0);
case ('D') : cust.display();
break;
case ('L') : cust.list();
break;
case ('H') : cust.help();
break;
case ('R') :
ch1 = 'A' ;
while(ch1 != 'Q')
{
clrscr();
cout<<"***************************************************************************";cout<<"\n\n\t\t\t BHARAT SANCHAR NIGAM LIMITED (B.S.N.L)";
cout<<"\n\n***********************************************************************";
cout<<" \n\n\t A - Append a record";
cout<<" \n\t D - Delete a record";
cout<<" \n\t M - Change a record";
cout<<" \n\t Q - Quit";
cout<< "\n\n\tSelect your choice :- ";
cout<<"\n\n***********************************************************************";
cin>> ch1;
ch1 = toupper(ch1);
switch(ch1)
{
case ('A') : cust.append();
break;
case ('D') : cust.del();
break;
case ('M') : cust.modify();
break;
}
}
}
Comment