Telephone Bill Center in C

#include <iostream.h>
#include <fstream.h>
#include <string.h>
#include <iomanip.h>
#include <conio.h>
#include <process.h>
#include <dos.h>
#include <graphics.h>

//                 #### Bill Center ####
class bill{
 char cno[5];
 char bdate[8];
 char dueamt[6];
 char oamt[6];
 char duedate[8];
 public:
 void assign();
 void putdata();
 char* cus(){return cno;}
 void billupdate(char* cusno,char* outamt,char* damt,char* billd,char* dued)
 {
    strcpy(cno,cusno);
    strcpy(oamt,outamt);
    strcpy(dueamt,damt);
    strcpy(bdate,billd);
    strcpy(duedate,dued);
 }
 };
void bill:: assign()
   {
     cout<<"\n Enter customer no.:";
     cin>>cno;
     cout<<"\n Enter bill date:";
     cin>>bdate;
     cout<<"\n Enter due amount:";
     cin>>dueamt;
     cout<<"\n Enter outstanding amount:";
     cin>>oamt;
     cout<<"\n Enter duedate:";
     cin>>duedate;
    }
void bill::putdata()
    {
     cout<<"\n Customer No.: "<<cno;
     cout<<"\n Bill date: "<<bdate;
     cout<<"\n Due Amt.: "<<dueamt;
     cout<<"\n Outstanding Amt.: "<<oamt;
     cout<<"\n Due date: "<<duedate;
    }

void readbill()
{
 bill rec;
 fstream file;
 file.open("c:\\bill.dat",ios::ate|ios::in|ios::out|ios::binary);
 char ch;
 char cusno[5],outamt[6],damt[6],billd[8],dued[8];
 int choice,found=0;
 while(1){
       clrscr();
       cout<<"\n*****Bill Centre*****\n";
       cout<<"1)Add New Record\n";
       cout<<"2)Display All Records\n";
       cout<<"3)Search Bill Details\n";
       cout<<"4)Update Bill Details\n";
       cout<<"5)Exit\n";
       cout<<"\nEnter your choice: ";
       cin>>choice;
       switch (choice){
     case 1://New Record
    rec.assign();
    cin.get(ch);
    file.write((char *)&rec, sizeof(rec));
    break;
     case 2://Display All Records
    file.seekg(0,ios::beg);
    cout<<"\n\n Records in Bill Centre\n";
    while(file){
    file.read((char *)&rec, sizeof(rec));
    if (!file.eof())
    rec.putdata();
    }
    file.clear();
    getch();
    break;
     case 3://Search Bill Details when customer no.is known.
    cout<<"\n\nEnter Customer No.: ";
    cin>>cusno;
    file.seekg(0,ios::beg);
    found=0;
    while(file.read((char *)&rec, sizeof(rec)))
    {
     if(strcmp(cusno,rec.cus())==0)
     {
      found=1;
      rec.putdata();
     }
    }
    file.clear();
    if(found==0)
    cout<<"\n---Record Not Found---\n";
    getch();
    break;
     case 4://Update Bill Details.
    cout<<"\n\n Enter Customer No.: ";
    cin>>cusno;
    file.seekg(0,ios::beg);
    found=0;
    int cnt=0;
    while(file.read((char *)&rec, sizeof(rec)))
    {
     cnt++;
     if(strcmp(cusno,rec.cus())==0)
     {
      found=1;
      break;
     }
    }
    file.clear();
    if(found==0)
    cout<<"\n\n---Record Not Found---";
    else
    {
    int location=(cnt-1) * sizeof(rec);
    cin.get(ch);
    if(file.eof())
    file.clear();
    cout<<"\n Enter new Bill Date: ";
    cin>>billd;
    cout<<"\n Enter new Due Date: ";
    cin>>dued;
    cout<<"\n Enter new Due Amt.: ";
    cin>>damt;
    cout<<"\n Enter new Outstanding Amt.: ";
    cin>>outamt;
    file.seekp(location);
    rec.billupdate(cusno,outamt,damt,billd,dued);
    file.write((char *)&rec, sizeof(rec));
    file.flush();
    }
    break;
     case 5://Exit
    goto out;
    }
     }
     out:
     file.close();

     }


//                  #### Telephone Directory ####

class phoneBook{
char name[20],phno[6];
public:
void getdata();
void showdata();
char *getname(){ return name; }
char *getphno(){ return phno; }
void update(char *nm,char *telno){
strcpy(name,nm);
strcpy(phno,telno);
}
};

void phoneBook :: getdata(){
cout<<"\nEnter Name : ";
cin>>name;
cout<<"Enter Phone No. : ";
cin>>phno;
}

void phoneBook :: showdata(){
cout<<"\n";
cout<<setw(15)<<name;
cout<<setw(8)<<phno;
}


void readphone(){
phoneBook rec;
fstream file;
file.open("c:\\phone.dat", ios::ate | ios::in | ios::out | ios::binary);
char ch,nm[20],telno[6];
int choice,found=0;
while(1){
clrscr();
cout<<"\n*****Phone Book*****\n";
cout<<"1) Add New Record\n";
cout<<"2) Display All Records\n";
cout<<"3) Search Telephone No.\n";
cout<<"4) Search Person Name\n";
cout<<"5) Update Telephone No.\n";
cout<<"6) Exit\n";
cout<<"Choose your choice : ";
cin>>choice;
switch(choice){
case 1 : //New Record
rec.getdata();
cin.get(ch);
file.write((char *) &rec, sizeof(rec));
break;

case 2 : //Display All Records
file.seekg(0,ios::beg);
cout<<"\n\nRecords in Phone Book\n";
while(file){
file.read((char *) &rec, sizeof(rec));
if(!file.eof())
rec.showdata();
}
file.clear();
getch();
break;

case 3 : //Search Tel. no. when person name is known.
cout<<"\n\nEnter Name : ";
cin>>nm;
file.seekg(0,ios::beg);
found=0;
while(file.read((char *) &rec, sizeof(rec)))
{
if(strcmp(nm,rec.getname())==0)
{
found=1;
rec.showdata();
}
}
file.clear();
if(found==0)
cout<<"\n\n---Record Not found---\n";
getch();
break;

case 4 : //Search name on basis of tel. no
cout<<"\n\nEnter Telephone No : ";
cin>>telno;
file.seekg(0,ios::beg);
found=0;
while(file.read((char *) &rec, sizeof(rec)))
{
if(strcmp(telno,rec.getphno())==0)
{
found=1;
rec.showdata();
}
}
file.clear();
if(found==0)
cout<<"\n\n---Record Not found---\n";
getch();
break;

case 5 : //Update Telephone No.
cout<<"\n\nEnter Name : ";
cin>>nm;
file.seekg(0,ios::beg);
found=0;
int cnt=0;
while(file.read((char *) &rec, sizeof(rec)))
{
cnt++;
if(strcmp(nm,rec.getname())==0)
{
found=1;
break;
}
}
file.clear();
if(found==0)
cout<<"\n\n---Record Not found---\n";
else
{
int location = (cnt-1) * sizeof(rec);
cin.get(ch);
if(file.eof())
file.clear();

cout<<"Enter New Telephone No : ";
cin>>telno;
file.seekp(location);
rec.update(nm,telno);
file.write((char *) &rec, sizeof(rec));
file.flush();
}
break;
case 6 ://Exit
 goto out;
}
}
out:
file.close();
}

void main()
{
   int gdriver = DETECT, gmode, errorcode;

   initgraph(&gdriver, &gmode, "c:\\tc\\bgi");
   setcolor(BLUE);
   for(int i=300,j=240;i>=20;i--,j++)
      {
       cleardevice();
       rectangle(i,i,j,j);
       delay(7);
      }
   settextstyle(10,0,5);
   cleardevice();
   rectangle(20,20,600,450);
   delay(100);
   outtextxy(60,200,"W ");delay(80);
   for(i=0;i<1;i++)
    {
       for(int j=100;j<500;j=j+50)
       {sound(j);delay(100);nosound();}


    }

   outtextxy(150,200,"E ");delay(80);
   for(i=0;i<1;i++)
    {
       for(j=100;j<500;j=j+50)
       {sound(j);delay(100);nosound();}


    }

   outtextxy(210,200,"L ");delay(80);
   for(i=0;i<1;i++)
    {
       for(j=100;j<500;j=j+50)
       {sound(j);delay(100);nosound();}


    }

   outtextxy(270,200,"C ");delay(80);
   for(i=0;i<1;i++)
    {
       for(j=100;j<500;j=j+50)
       {sound(j);delay(100);nosound();}


    }

   outtextxy(330,200,"O ");delay(80);
   for(i=0;i<1;i++)
    {
       for(j=100;j<500;j=j+50)
       {sound(j);delay(100);nosound();}


    }

   outtextxy(390,200,"M ");delay(80);
   for(i=0;i<1;i++)
    {
       for(j=100;j<500;j=j+50)
       {sound(j);delay(100);nosound();}


    }

   outtextxy(450,200,"E ");



   getch();
   closegraph();

 clrscr();
int choice;
do{
cout<<"\n****** TELEPHONE INFORMATION CENTER ******";
cout<<"\n\n 1. Telephone Directory";
cout<<"\n 2. Bill Center";
cout<<"\n 3. Exit";
cout<<"\n Enter your choice";
cin>>choice;
{
if(choice==1)
readphone();
else
if(choice==2)
readbill();
else
exit(0);
}
}
while(choice!=3);
getch();
}






for more codes you can Visit http://codesofprogramming.blogspot.in/