How to access the arrays in private class of C++? - c++

Question

class bus {
private:
string arr[10] = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9" };
public:
void reservation();
};
Here, I have a private array that I want to access and make changes through the reservation() in public class.
void bus::reservaton() {
cout << "What should I write in here to change the 3rd and 7th index of the
above array to \"not empty\"" << endl;
}
Suppose, I want to make the 3rd and 7th index to "not empty", what should I write there?
Sample:-
string arr[10] = { "0", "1", "2", "not empty", "4", "5", "6", "not empty", "8", "9" };
And do I need to make any changes in the main function? If yes, then can you please help me by writing it down.
Thank you.

Answer 1

How to use arrays
void bus::reservation() {
arr[3] = "not empty";
arr[7] = "not empty";
}

Answer 2

For this, a simple assignment operator (=) would work.
For example, in the following example, the value at index 1 is changed:
std::string slist[ 3 ] { "a", "b", "c" };
slist[ 1 ] = "Changed!";
Live example: http://ideone.com/rO9hwt
BTW, you should use std::vector of std::string instead of an array. And, take a look at its member function at() for accessing the value of an index with out of bounds checking.
Live example: http://ideone.com/bcHZpY