Create a Book Publisher Management program in C++ Language

#include<conio.h>
#include<iostream.h>
#include<string.h>
class book
{
char b_title[30],b_author[30],b_publisher[30],b_edition[10];
double b_code;
public:
void input();
void output();
void change(int);
};
void book::input()
{
    cout<<"\n\tEnter Book Code      :-\t";cin>>b_code;
    cout<<"\n\tEnter Book Title     :-\t";cin>>b_title;
    cout<<"\n\tEnter Book Edition   :-\t";cin>>b_edition;
    cout<<"\n\tEnter Book Author    :-\t";cin>>b_author;
    cout<<"\n\tEnter Book Publisher :-\t";cin>>b_publisher;
    cout<<endl;

}
void book::output()
{
    cout<<"\n\tBook Code      :-\t"<<b_code;
    cout<<"\n\tBook Title     :-\t"<<b_title;
    cout<<"\n\tBook Edition   :-\t"<<b_edition;
    cout<<"\n\tBook Author    :-\t"<<b_author;
    cout<<"\n\tBook Publisher :-\t"<<b_publisher;
    cout<<endl;
}
void book::change(int temp)
{
    if(b_code==temp)
    {
    cout<<"\n\tEnter Book Code      :-\t";cin>>b_code;
    cout<<"\n\tEnter Book Title     :-\t";cin>>b_title;
    cout<<"\n\tEnter Book Edition   :-\t";cin>>b_edition;
    cout<<"\n\tEnter Book Author    :-\t";cin>>b_author;
    cout<<"\n\tEnter Book Publisher :-\t";cin>>b_publisher;
    cout<<endl;
    return;
    }
}
void main()
{
textcolor(115);
clrscr();
int me=1;
int i=0;
book obj[10];
char b_title[30],b_author[30],b_publisher[30],b_edition[10];
int b_code,m;
while(me)
{
cout<<"Enter 1 For Enter New\nEnter 2 For Change\nEnter 3 For Display\nEnter 4 For Exit\n";
cin>>m;
    switch(m)
    {
    case 1: clrscr();
        if(i>9)
        {
        cout<<"Only 9";
        return;
        }
        obj[i].input();
        i=i+1;
        break;
    case 2: cout<<"Enter The Book Id For Change";
        int temp=0;
        cin>>temp;
        for(int p=0;p<i;p++)
        {
        obj[p].change(temp);
        }
        break;
    case 3: for(p=0;p<i;p++)
        {
        obj[p].output();
        }
        break;
    case 4:    me=0;
        break;
    }
}
getch();
}