Question

#include #include #include #include #include #include #include #include using namespace std; int flag=0; ofstream fout; ifstream fin; class tbill { public : float fixamount1,fixamount2,fixamount3,natroamom,natroamim; float natroamor,natroamir,stdrate,stdmin,smsr; float gprsrate,gprskb,mmsr; int sms,mms,billid; float interroami,interroamir,interroamo,interroamor,misc,grandtotal,isdrate,isdmin; void ent(); void sho(); void edi(); void cal(); int ret() { return(billid); } }x; void tbill::cal() { x.natroamor = x.na

Answer 1

#include<iostream>
#include<conio.h>
#include<process.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<fstream>
#include<iomanip>

using namespace std;

int flag=0;
ofstream fout;
ifstream fin;



class tbill
{
public :
float fixamount1,fixamount2,fixamount3,natroamom,natroamim;
float natroamor,natroamir,stdrate,stdmin,smsr;
float gprsrate,gprskb,mmsr;
int sms,mms,billid;
float interroami,interroamir,interroamo,interroamor,misc,grandtotal,isdrate,isdmin;
void ent();
void sho();
void edi();
void cal();
int ret()
{
return(billid);
}
}x;


void tbill::cal()
{
x.natroamor = x.natroamom*2;
x.natroamir = x.natroamim*2.5;
x.interroamor=x.interroamo*15;
x.interroamir=x.interroami*17;
x.gprsrate=x.gprskb*0.10;
x.smsr=x.sms*0.50;
x.mmsr=x.mms*3;
x.stdrate=x.stdmin*1;
x.isdrate=x.isdmin*8;
x.grandtotal=x.natroamor + x.natroamir + x.interroamor + x.interroamir + x.gprsrate + x.smsr +
x.mmsr + x.stdrate + x.isdrate + x.misc;
}


void tbill::edi()
{
system("cls");
sho();
cout<<endl<<"==============================================================================";
cout<<endl<<"\t Press Any Key To Continue ";
cout<<endl<<"==============================================================================";
getch();
system("cls");
sho();
cout<<endl<<"==============================================================================";
cout<<endl<<" Edit What????? ";
cout<<endl<<"==============================================================================";
cout<<endl;
cout<<"1. Incoming Calls\t\t\t6. No of MMS"<<endl;
cout<<"2. No of SMS\t\t\t\t7. ISD Calls\t\t"<<endl;
cout<<"3. Roaming Incoming Calls\t\t8. International Roaming Incoming"<<endl;
cout<<"4. Roaming Outgoing Calls\t\t9. International Roaming Outgoing"<<endl;
cout<<"5. GPRS Usage ( in Kb )\t\t\t10. Miscellaneous Charges "<<endl;
cout<<"==============================================================================";
cout<<endl<<"Enter Choice : ";
int ch;
pp :
cin>>ch;
if(ch==1)
{
cout<<"Enter Incoming Calls min : ";
cin>>x.stdmin;
}
if(ch==2)
{
cout<<"Enter SMS : ";
cin>>x.sms;
}
if(ch==3)
{
cout<<"Enter Roaming in : ";
cin>>x.natroamim;
}
if(ch==4)
{
cout<<"Enter Roaming out : ";
cin>>x.natroamom;
}
if(ch==5)
{
cout<<"Enter GPRS Usage : ";
cin>>x.gprskb;
}
if(ch==6)
{
cout<<"Enter MMS no : ";
cin>>x.mms;
}
if(ch==7)
{
cout<<"Enter ISD Min : ";
cin>>x.isdmin;
}
if(ch==8)
{
cout<<"Enter ISD Roam in : ";
cin>>x.interroami;
}
if(ch==9)
{
cout<<"Enter ISD Roamout : ";
cin>>x.interroamo;
}
if(ch==10)
{
cout<<"Enter Misc Charge : ";
cin>>x.misc;
}
if((ch>10)||(ch==0))
{
cout<<"\n\t\t\t\tInvalid Choice !!!!!"<<endl<<"\t\t\t\t";
goto pp;
}
cal();
fout.write((char *)&x,sizeof(x));
}


void tbill::ent()
{
cout<<endl<<" Incoming Calls (mts) : ";
cin>>x.stdmin;
cout<<endl<<" No of SMS : ";
cin>>x.sms;
cout<<endl<<" Roaming Incoming Calls (mts): ";
cin>>x.natroamim;
cout<<endl<<" Roaming Outgoing Calls (mts): ";
cin>>x.natroamom;
cout<<endl<<" GPRS Usage ( in Kb ) : ";
cin>>x.gprskb;
cout<<endl<<" No of MMS : ";
cin>>x.mms;
cout<<endl<<" ISD Calls (mts) : ";
cin>>x.isdmin;
cout<<endl<<" Inter Roaming Incoming (mts): ";
cin>>x.interroami;
cout<<endl<<" Inter Roaming Outgoing (mts): ";
cin>>x.interroamo;
cout<<endl<<" Miscellaneous Charges : ";
cin>>x.misc;
cal();
fout.write((char *)&x,sizeof(x));
fout.close();
}


void tbill::sho()
{
cout<<"================================================================================";
cout<<"\t\t CALLS ";
cout<<"\t"<<" MINUTES/No.";
cout<<"\t"<<"AMOUNT";
cout<<endl;
cout<<"================================================================================";
cout<<endl<<"\t\t Incoming Calls ";
cout<<"\t"<<x.stdmin;
cout<<"\t\t"<<x.stdrate;
cout<<endl<<"\t\t No of SMS ";
cout<<"\t"<<x.sms;
cout<<"\t\t"<<x.smsr;
cout<<endl<<"\t\t Roaming Incoming Calls ";
cout<<"\t"<<x.natroamim;
cout<<"\t\t"<<x.natroamir;
cout<<endl<<"\t\t Roaming Outgoing Calls ";
cout<<"\t"<<x.natroamom;
cout<<"\t\t"<<x.natroamor;
cout<<endl<<endl<<"\t\t GPRS Usage ( in Kb ) ";
cout<<"\t"<<x.gprskb;
cout<<"\t\t"<<x.gprsrate;
cout<<endl<<"\t\t No of MMS ";
cout<<"\t"<<x.mms;
cout<<"\t\t"<<x.mmsr;
cout<<endl<<endl<<"\t\t ISD Calls ";
cout<<"\t"<<x.isdmin;
cout<<"\t\t"<<x.isdrate;
cout<<endl<<"\t\t Inter Roaming Incoming ";
cout<<"\t"<<x.interroami;
cout<<"\t\t"<<x.interroamir;
cout<<endl<<"\t\t Inter Roaming Outgoing ";
cout<<"\t"<<x.interroamo;
cout<<"\t\t"<<x.interroamor;
cout<<endl<<"\t\t Miscellaneous Charges ";
cout<<"\t\t\t"<<x.misc;
cout<<endl<<endl<<"\t\t | Total Charges | ";
cout<<"\t\t\t"<<x.grandtotal;
}



class customer
{
long phno,acno,pcode;
char name[50],address[50],city[50];
public :
long id;
void ecustdet();
void scustdet();
void dcustdet();
void edcustdet();
int ret()
{
return(id);
}
}a;


void customer::edcustdet()
{
system("cls");
int ch;
cout<<"================================================================================";
cout<<"\t\t\t Current Customer Details"<<endl;
cout<<"================================================================================";
scustdet();
cout<<"================================================================================";
cout<<"\t\t\t\t Edit What ?????? "<<endl;
cout<<"================================================================================";
cout<<endl<<"\t1.Name 2.Address 3.Street 4.Pin Code 5.Ph no 6.A/c no "<<endl;
cout<<"================================================================================";
pp :
cout<<endl<<"\t\t\t\tEnter Option : ";
cin>>ch;
if(ch==1)
{
cout<<"\n\t\t\t\tEnter Name : ";
gets(a.name);
}
if(ch==2)
{
cout<<"\n\t\t\t\tEnter Address : ";
gets(a.address);
}
if(ch==3)
{
cout<<"\n\t\t\t\tEnter Street : ";
gets(a.city);
}
if(ch==4)
{
cout<<"\n\t\t\t\tEnter Pincode : ";
cin>>a.pcode;
}
if(ch==5)
{
cout<<"\n\t\t\t\tEnter Phone No : ";
cin>>a.phno;
}
if(ch==6)
{
cout<<"\n\t\t\t\tEnter A/C no : ";
cin>>a.acno;
}
if((ch>6)||(ch==0))
{
cout<<"\n\t\t\t\tInvalid Choice !!!!!"<<endl<<"\t\t\t\t";
goto pp;
}
fout.write((char *)&a,sizeof(a));
}


void customer::ecustdet()
{
int id;
ret :
fin.open("customer.dat",ios::binary);
fin.seekg(0);
cout<<endl<<"Enter Customer id : ";
cin>>id;
while(!fin.eof())
{
fin.read((char*)&a,sizeof(a));
int x=a.ret();
if(x==id)
{
cout<<"\n\n\t\tERROR!!! ID ALREADY TAKEN.....CHOSE ANY OTHER ID \n\n";
fin.close();
goto ret;
}
}
fin.close();
a.id=id;
cout<<endl<<"Enter Name : ";
gets(a.name);
cout<<endl<<"Enter Address : ";
gets(a.address);
cout<<endl<<"Enter Street : ";
gets(a.city);
cout<<endl<<"Enter Pincode : ";
cin>>a.pcode;
cout<<endl<<"Enter Phone No : ";
cin>>a.phno;
cout<<endl<<"Enter A/C no : ";
cin>>a.acno;
fout.write((char *)&a,sizeof(a));
fout.close();
}


void customer::scustdet()
{
cout<<endl<<"\tName : ";
puts(a.name);
cout<<"\t\t\t\t\t\t"<<"ID NO : ";
cout<<a.id;
cout<<endl<<"\tAddress : ";
puts(a.address);
cout<<"\t\t\t\t\t\t"<<"Phone No : ";
cout<<a.phno;
cout<<endl<<"\tStreet : ";
puts(a.city);
cout<<"\t\t\t\t\t\t"<<"A/C no : ";
cout<<a.acno;
cout<<endl<<"\tPincode : ";
cout<<a.pcode<<endl;
}




int main()
{
system("cls");
int ch,cid;
y:
//////gotoxy(1,5);
cout<<"================================================================================";
//gotoxy(32,6);
cout<<"TELEPHONE BILLER";
cout<<endl;
cout<<"================================================================================";
//gotoxy(27,10);
cout<<"1) ENTER CUSTOMER DATABASE";
//gotoxy(27,13);
cout<<"2) ENTER BILL DATABASE";
//gotoxy(27,16);
cout<<"3) ENTER BILLING DETAILS";
//gotoxy(27,19);
cout<<"4) EXIT FROM PROGRAM"<<endl<<endl;
cout<<"================================================================================";
cout<<endl<<" Enter Your Choice : ";
//gotoxy(1,25);
cout<<"================================================================================";
//gotoxy(35,22);
cin>>ch;
switch(ch)
{
case 1:
system("cls");
int op=0;
x:
system("cls");
cout<<endl<<endl;
cout<<"********************************************************************************";
cout<<endl;
cout<<"\t\t\t CUSTOMER SECTION";
cout<<endl;
cout<<"\t\t\t ================";
cout<<endl<<endl<<endl;
cout<<"\t\t\t\t1) ADD\n\n";
cout<<"\t\t\t\t2) EDIT\n\n";
cout<<"\t\t\t\t3) DELETE\n\n";
cout<<"\t\t\t\t4) VIEW \n\n";
cout<<"\t\t\t\t5) BACK to MAIN";
cout<<endl<<endl<<endl;
cout<<"********************************************************************************";
cout<<endl<<" Enter Your Choice : ";
cin>>op;

if(op==1)
{
system("cls");
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tYOU HAVE CHOSEN TO ADD CUSTOMER";
cout<<endl<<endl;
cout<<"================================================================================";
fout.open("customer.dat",ios::binary|ios::app);
a.ecustdet();
system("cls");
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tCUSTOMER ADDED SUCCESSFULLY";
cout<<endl<<endl;
cout<<"================================================================================";
getch();
goto x;
}
if(op==2)
{
flag=0;
int r=0;
system("cls");
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tYou Have chosen to EDIT CUSTOMER";
cout<<endl;
cout<<"================================================================================";
cout<<endl;
cout<<"\n\n\n\n\n\n\n\n\n\t\t Enter CUSTOMER id to be EDITED : ";
cin>>cid;
system("cls");
fin.open("customer.dat",ios::binary);
fout.open("customer.dat",ios::binary|ios::app);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto x;
}
fin.seekg(0);
while(!fin.eof())
{
r++;
fin.read((char*)&a,sizeof(a));
if(!fin.eof())
{
int x=a.ret();
if(x==cid)
{
flag=1;
fout.seekp((r-1)*sizeof(a));
a.edcustdet();
fout.close();
fin.close();
system("cls");
cout<<"================================================================================";
cout<<"\t\t\tCUSTOMER EDITED SUCCESSFULLY";
cout<<endl;
cout<<"================================================================================";
getch();
goto x;
}}}
if(flag==0)
{cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tCUSTOMER DOESNOT EXIST...";
getch();
fin.close();
system("cls");
goto x;
}}
if(op==3)
{
flag=0;
system("cls");
cout<<"================================================================================";
cout<<"\t\t\tYou Have chosen to DELETE CUSTOMER";
cout<<endl<<endl;
cout<<"================================================================================";
cout<<"\n\n\n\n\n\n\n\n\n\t\t Enter CUSTOMER id to be DELETED : ";
cin>>cid;
char sure;
fin.open("customer.dat",ios::binary);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto x;}
fstream tmp("temp.dat",ios::binary|ios::out);
fin.seekg(0);
while(fin.read((char*)&a, sizeof(a)))
{
int x=a.ret();
if(x!=cid)
tmp.write((char*)&a,sizeof(a));
else
{
flag=1;
system("cls");
cout<<"================================================================================";
cout<<"\t\t\tAre You SURE You Want To DELETE This";
cout<<endl<<endl;
cout<<"================================================================================";
a.scustdet();
cout<<"================================================================================";
cout<<endl<<"\n\n\n\n\n\n\n\t\tEnter 'y' for YES or ANY other key for cancel :";
cin>>sure;
if(sure!='y')
{
system("cls");
tmp.close();
fin.close();
goto x;
}}}
system("cls");
fin.close();
tmp.close();
fout.open("customer.dat",ios::trunc|ios::binary);
fout.seekp(0);
tmp.open("temp.dat",ios::binary|ios::in);
if(!tmp)
{
cout<<"Error in File";
goto x;}
while(tmp.read((char*)&a,sizeof(a)))
fout.write((char*)&a,sizeof(a));
tmp.close();
fout.close();
if(flag==1)
{
system("cls");
a.id=-32;
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tCUSTOMER DELETED SUCCESSFULLY";
cout<<endl<<endl;
cout<<"================================================================================";
getch();
flag=0;
fin.open("bill.dat",ios::binary);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto x;
}
fstream tmp("temp.dat",ios::binary|ios::out);
fin.seekg(0);
while(fin.read((char*)&x, sizeof(x)))
{
int zx=x.ret();
if(zx!=cid)
tmp.write((char*)&x,sizeof(x));
else
{
flag=1;
}}
tmp.close();
fin.close();
x.billid=-32;
fout.open("bill.dat",ios::trunc|ios::binary);
fout.seekp(0);
tmp.open("temp.dat",ios::binary|ios::in);
if(!tmp)
{
cout<<"Error in File";
getch();
goto x;
}
while(tmp.read((char*)&x,sizeof(x)))
fout.write((char*)&x,sizeof(x));
tmp.close();
fout.close();
if(flag==1)
{system("cls");
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tBILL OF THIS CUSTOMER ALSO DELETED......";
getch();
system("cls");
goto x;
}
if(flag==0)
{
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tNO BILL FOUND TO DELETE......";
getch();
fin.close();
system("cls");
goto x;
}
system("cls");
goto x;}
if(flag==0)
{
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tCUSTOMER DOESNOT EXIST...";
getch();
fin.close();
system("cls");
goto x;
}}
if(op==4)
{
flag=0;
system("cls");
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tYou Have chosen to VIEW CUSTOMER";
cout<<endl<<endl;
cout<<"================================================================================";
cout<<"\n\n\n\n\n\n\n\n\n\t\t Enter CUSTOMER id to be VIEWED : ";
cin>>cid;
system("cls");
cout<<"\n\n\n\n\n\n\n";
fin.open("customer.dat",ios::binary);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto x;
}
fin.seekg(0);
while(!fin.eof())
{
fin.read((char*)&a,sizeof(a));
int x=a.ret();
if(x==cid)
{
flag=1;
a.scustdet();
fin.close();
getch();
system("cls");
goto x;
}}
if(flag==0)
{
system("cls");
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tCUSTOMER DOESNOT EXIST...";
getch();
fin.close();
system("cls");
goto x;
}}


if(op==5)
{
system("cls");
goto y;
}


if((op>5)||(op==0))
{
system("cls");
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tINVALID CHOICE TRY AGAIN ";
cout<<endl<<endl;
cout<<"================================================================================";
goto x;
}
break;


//case 2:
system("cls");
int sel;
z:
system("cls");
cout<<endl<<endl;
cout<<"* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ";
cout<<endl;
cout<<"\t\t\t\tBILLING SECTION";
cout<<endl;
cout<<"\t\t\t\t================";
cout<<endl<<endl<<endl;
cout<<"\t\t\t\t1) ADD \n\n";
cout<<"\t\t\t\t2) EDIT \n\n";
cout<<"\t\t\t\t3) DELETE\n\n";
cout<<"\t\t\t\t4) SHOW \n\n";
cout<<"\t\t\t\t5) BACK to MAIN";
cout<<endl<<endl<<endl;
cout<<"* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ";
cout<<endl<<" ENTER YOUR CHOICE : ";
cin>>sel;
if(sel==1)
{
rett :
system("cls");
flag=0;
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tYou Have Chosen To ADD BILL";
cout<<endl<<endl;
cout<<"================================================================================";
cout<<"\n\n\n\t\tEnter CUSTOMER id to ADD BILL : ";
cin>>cid;
cout<<"================================================================================";
fin.open("customer.dat",ios::binary);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto z;}
fin.seekg(0);
while(!fin.eof())
{
fin.read((char*)&a,sizeof(a));
int x=a.ret();
if(x==cid)
{
flag=1;
a.scustdet();
fin.close();
goto bill;
}}
if(flag==0)
{
system("cls");
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tCUSTOMER DOESNOT EXIST...";
getch();
fin.close();
system("cls");
goto z;
}
bill :
fin.open("bill.dat",ios::binary);
fin.seekg(0);
while(!fin.eof())
{
fin.read((char*)&x,sizeof(x));
int xp=x.ret();
if(xp==cid)
{system("cls");
cout<<"\n\n\n\n\n\n\n\n\n\n\n\t\t\t CUSTOMER ALREADY BILLED !!!!!\n\n";
fin.close();
getch();
goto rett;
}}
fin.close();
flag=0;
fout.open("bill.dat",ios::binary|ios::app);
x.billid=cid;
x.ent();
system("cls");
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tBILL ADDED SUCCESSFULLY";
cout<<endl<<endl;
cout<<"================================================================================";
getch();
goto z;
}
if(sel==2)
{
flag=0;
int r=0;
system("cls");
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tYou Have chosen to EDIT BILL";
cout<<endl;
cout<<"================================================================================";
cout<<endl;
cout<<"\n\n\n\n\n\n\n\n\n\t\t Enter CUSTOMER id to EDIT BILL : ";
cin>>cid;
system("cls");
fin.open("customer.dat",ios::binary);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto z;}
fin.seekg(0);
while(!fin.eof())
{
fin.read((char*)&a,sizeof(a));
int x=a.ret();
if(x==cid)
{
flag=1;
a.scustdet();
fin.close();
cout<<"\n\n\tPress Any Key To Continue Editing Bill of This Customer...";
getch();
system("cls");
goto bill2;
}}
if(flag==0)
{
system("cls");
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tCUSTOMER DOESNOT EXIST...";
getch();
fin.close();
system("cls");
goto z;
}
bill2 :
flag=0;
fin.open("bill.dat",ios::binary);
fout.open("bill.dat",ios::binary|ios::app);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto z;
}
fin.seekg(0);
while(!fin.eof())
{
r++;
fin.read((char*)&x,sizeof(x));
if(!fin.eof())
{
int kkx=x.ret();
if(kkx==cid)
{
flag=1;
fout.seekp((r-1)*sizeof(x));
x.edi();
fout.close();
fin.close();
system("cls");
cout<<"================================================================================";
cout<<"\t\t\tBILL Edited SUCCESSFULLY";
cout<<endl;
cout<<"================================================================================";
getch();
goto z;
}}}
if(flag==0)
{
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tBILL DOESNOT EXIST......";
getch();
fin.close();
system("cls");
goto z;
}}
if(sel==3)
{
flag=0;
system("cls");
cout<<"================================================================================";
cout<<"\t\t\tYou Have chosen to DELETE BILL";
cout<<endl<<endl;
cout<<"================================================================================";
cout<<"\n\n\n\n\n\n\n\n\n\t\t Enter CUSTOMER id to DELETE BILL : ";
cin>>cid;
char sure;
system("cls");
fin.open("customer.dat",ios::binary);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto z;}
fin.seekg(0);
while(!fin.eof())
{
fin.read((char*)&a,sizeof(a));
int x=a.ret();
if(x==cid)
{
flag=1;
a.scustdet();
fin.close();
cout<<"\n\n\tPress Any Key To Continue Deleting Bill of This Customer...";
getch();
system("cls");
goto bill3;
}}
if(flag==0)
{
system("cls");
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tCUSTOMER DOESNOT EXIST...";
getch();
fin.close();
system("cls");
goto z;
}
bill3 :
flag=0;
fin.open("bill.dat",ios::binary);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto z;}
fstream tmp("temp.dat",ios::binary|ios::out);
fin.seekg(0);
while(fin.read((char*)&x, sizeof(x)))
{
int zx=x.ret();
if(zx!=cid)
tmp.write((char*)&x,sizeof(x));
else
{
flag=1;
system("cls");
cout<<"================================================================================";
cout<<"\t\tAre You Sure You Want To DELETE This???????";
cout<<endl;
cout<<"================================================================================";
x.sho();
cout<<endl<<"================================================================================";
cout<<"\n\t\tEnter 'y' for YES or ANY other key for CANCEL :";
cin>>sure;
if(sure!='y')
{
system("cls");
tmp.close();
fin.close();
goto z;}}}
system("cls");
fin.close();
tmp.close();
x.billid=-32;
fout.open("bill.dat",ios::trunc|ios::binary);
fout.seekp(0);
tmp.open("temp.dat",ios::binary|ios::in);
if(!tmp)
{
cout<<"Error in File";
goto z;
}
while(tmp.read((char*)&x,sizeof(x)))
fout.write((char*)&x,sizeof(x));
tmp.close();
fout.close();
if(flag==1)
{
system("cls");
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tBILL DELETED SUCCESSFULLY";
cout<<endl<<endl;
cout<<"================================================================================";
getch();
system("cls");
goto z;
}
if(flag==0)
{
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tBILL DOESNOT EXIST......";
getch();
fin.close();
system("cls");
goto z;
}}
if(sel==4)
{
flag=0;
system("cls");
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\tYou Have chosen to VIEW BILL";
cout<<endl<<endl;
cout<<"================================================================================";
cout<<"\n\n\n\n\n\n\n\n\n\t\t Enter CUSTOMER id to VIEW BILL : ";
cin>>cid;
system("cls");
fin.open("customer.dat",ios::binary);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto z;}
fin.seekg(0);
while(!fin.eof())
{
fin.read((char*)&a,sizeof(a));
int x=a.ret();
if(x==cid)
{
flag=1;
a.scustdet();
fin.close();
goto bill4;
}}
if(flag==0)
{
system("cls");
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tCUSTOMER DOESNOT EXIST...";
getch();
fin.close();
system("cls");
goto z;
}
bill4:
flag=0;
fin.open("bill.dat",ios::binary);
if(!fin)
{
cout<<"\n\nFile Not Found...";
goto z;}
fin.seekg(0);
while(!fin.eof())
{
fin.read((char*)&x,sizeof(x));
int px=x.ret();
if(px==cid)
{
flag=1;
x.sho();
fin.close();
getch();
system("cls");
goto z;
}}
if(flag==0)
{
system("cls");
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\t\t\tBILL DOESNOT EXIST......";
getch();
system("cls");
fin.close();
goto z;
}}


if(sel==5)
{
system("cls");
goto y;
}


if((sel>5)||(sel==0))
{
system("cls");
cout<<"================================================================================";
//gotoxy(28,2);
cout<<"INVALID CHOICE TRY AGAIN ";
cout<<endl;
cout<<"================================================================================";
goto z;
}
break;




//case 3:
char f[1];
system("cls");
cout<<"================================================================================";
cout<<endl;
cout<<"\t\t\t\tBILLING DETAILS";
cout<<endl<<endl;
cout<<"================================================================================";
cout<<"\t\t STD RATE = Rs.1/minute"<<endl<<endl;
cout<<"\t\t National Roaming Outgoing RATE = Rs.2/minute"<<endl<<endl;
cout<<"\t\t National Roaming Incoming RATE = Rs.2.5/minute"<<endl<<endl;
cout<<"\t\t SMS RATE = Rs.0.50/SMS"<<endl<<endl;
cout<<"\t\t MMS RATE = Rs.3/MMS"<<endl<<endl;
cout<<"\t\t GPRS RATE = Rs.0.10/kb"<<endl<<endl;
cout<<"\t\t ISD RATE = Rs.8/minute"<<endl<<endl;
cout<<"\t\t International Roaming Outgoing RATE = Rs.15/minute"<<endl<<endl;
cout<<"\t\t International Roaming Incoming RATE = Rs.17/minute"<<endl<<endl;
gets(f);
system("cls");
goto y;



//case 4:
system("cls");
char s;
cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\tAre You Sure ??? ( Enter 'y' for YES and ANY key for NO ) :";
cin>>s;
if(s=='y')
{
cout<<"\n\n\nWe readily acknowledge my indebtedness to miss, our computer teacher for her support, dedication and honest efforts that has given me immense help in completing this project."<<endl;
cout<<"\n\n\t TEAM : | ARUN WILSON | GEORGE P JOHNSON | NITHISH NANDAKUMAR | "<<endl;
getch();
exit(0);
}
if(s!='y')
{
system("cls");
goto y;
}



//default:
system("cls");
cout<<"================================================================================";
//gotoxy(28,2);
cout<<"INVALID CHOICE TRY AGAIN ";
cout<<endl;
cout<<"================================================================================";
goto y;
}
getch();
}

Answer 2

how to run this project in devc++ pal solw error and replay me