invalid types ‘int[int]’ for array subscript

Question

#include <iostream>
using namespace std;
class Book{
// declaring private class data members
private:
char book_name[50];
float book_price;
int bookid;
char author[20];
bool available;
int year;
public:
// declaring constructor
Book()
{
cout<<"Default constructor is called"<<endl;
name = "student";
age = 12;
}
void input (){
int n=4;
cout<<"input 4 books";
for (int i=0; i<4 ; i++){
cout<<"Enter details for book "<<i<<":\n";
cout<<"\n book_name";
cin>>book_name[i];
}
}
// print function to print the class data members value
void print()
{
for(int i=0;i<4;i++){
cout<<"Details for book "<<i<<":\n";
cout<<"\nbook_name:"<<book_name[i];
cout<<"\nbookid:"<<bookid[i];
cout<<"\nbook_price:"<<book_price[i];
cout<<"\nauthor:"<<author[i];
cout<<"\navailable:"<<available[i];
cout<<"\nyear:"<<year[i];
}
}
};
int main()
{
// creating object of class using default constructor
Book obj;
// printing class data members
obj.print();
return 0;
}
along with the other errors i want to solve the int[int] error how may i?

Answer 1

Your book price ,bookid year also need to make array type

Answer 2

Your variables bookid, book_price, year are inter, float, int variables (single).
Not arrays. So bookid[i], book_price[i], year[i] are invalid. Errors.

Answer 3

Declare name, age also..
If you want to add 4 array of values to all variables then make array types and character array to character 2d array as book_name[4][50];
Otherwise, if it need just a single values then
don't need loop.
don't use subscript for variables
for character:
cin >> book_name;
cout<<book_name;
and other types
cout << year ; //example.

Answer 4

so how may i solve the problem