Post ur C/C++ Programs Here
- Thread starter mavihs
- Start date
iml3g3nd said:
many ppl have already posted about this.
please donot just beg for code which you are supposed to do as an assignment or project. If you have taken the effort to even try, post your code so that we can help you in finding the problems/errors.
blindly copying other people's code is not going to help you in the long run.
This thread was about posting your code so that others can learn from it and also point out your mistakes from which you can learn too.
techman said:
"Give a man a fish and you feed him for a day. Teach a man how to fish and you feed him for a lifetime."
- Lao Tzu
cant say anything else.
how to mantain a library-c++ program!!
#include<fstream.h>
#include<stdio.h>
#include<conio.h>
class book
{
int bookno;
char bookname[20];
char author[20];
char publisher[20];
float price;
int noofcopies;
int noofcopiesissued;
public:
int retbookno(){return bookno;}
void getdata();
void issue();
void returnbook();
void putdata();
};
void book::getdata()
{
cout<<"Enter Book Number";
cin>>bookno;
cout<<"Book Name";
gets(bookname);
cout<<"Publisher Name";
gets(publisher);
cout<<"Author Name";
gets(author);
cout<<"Price";
cin>>price;
cout<<"No of copies";
cin>>noofcopies;
noofcopiesissued=0;
}
void book::issue()
{
if(noofcopies>noofcopiesissued)
noofcopiesissued++;
else
cout<<"Sorry all copies are issued";
}
void book::returnbook()
{
noofcopiesissued--;
}
void book:utdata()
{
cout<<"Book Number:\t"<<bookno<<endl;
cout<<"Book Name\t"<<bookname<<endl;
cout<<"Publisher\t"<<publisher<<endl;
cout<<"Author\t"<<author<<endl;
cout<<"No of copies issued"<<noofcopiesissued<<endl;
cout<<"No of copies"<<noofcopies<<endl;
}
void main()
{
clrscr();
book obj;
int ch;
char ans;
fstream finout;
do
{
cout<<"\t\t\tMENU\n";
cout<<"\tchoice\tfunction\n";
cout<<"1.\tAdd Books\n";
cout<<"2.\tIssue Book\n";
cout<<"3.\tReturn Book\n";
cout<<"4.\tDisplay Books\n";
cout<<"5.\tExit\n";
cout<<"Enter your choice";
cin>>ch;
switch(ch)
{
case 1:
fstream fout("Library1.dat",ios::app);
do
{
obj.getdata();
fout.write((char*)&obj,sizeof(obj));
cout<<"do u wanna cntinue";
cin>>ans;
}while(ans=='y'||ans=='Y');
fout.close();
break;
case 2:
int c=0;
int bno;
cout<<"Enter Book Number";
cin>>bno;
finout.open("Library1.dat",ios::in|ios:ut);
while(finout.read((char*)&obj,sizeof(obj)))
{
c++;
if(obj.retbookno()==bno)
{
obj.issue();
finout.seekp((c-1)*sizeof(obj));
finout.write((char*)&obj,sizeof(obj));
break;
}
}
finout.close();
break;
case 3:
c=0;
bno;
cout<<"Enter Book Number";
cin>>bno;
finout.open("Library1.dat",ios::in|ios:
while(finout.read((char*)&obj,sizeof(obj)))
{
c++;
if(obj.retbookno()==bno)
{
obj.returnbook();
finout.seekp((c-1)*sizeof(obj));
finout.write((char*)&obj,sizeof(obj));
break;
}
}
finout.close();
break;
case 4:
finout.open("Library1.dat",ios::in);
while(finout.read((char*)&obj,sizeof(obj)))
obj.putdata();
finout.close();
break;
}
}while(ch!=5);
}