Status of sale in C#

Question

Good afternoon guys, all right?

I am creating a car rental system in C# and would like to implement a function that returns me all cars and a column that shows whether the requested car is leased or not, if it is leased, the ball would be green and otherwise, the red ball and that would automatically change when making the lease. I have researched in several places no longer find, Follow below an example:

The query I can do, the problem is this variable STATUS

Answer 1

There are several ways to do this check, for example, using 0 for unavailable and 1 for available, create a function that changes the status of this variable to the rental car from 0 to 1. Then just add this value in the table that mounted status.

You can also use lib bool which is based on the same principle, only using true and false.Example:

#include<stdbool.h>

bool setStatus(carro){
    if(carro == Alugado){
        return true;
    }
    return false;
}