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//Complete the class declaration here: class CarStock {   pu…

//Complete the class declaration here: class CarStock {   public:                                                ; // Constructor that uses three parameters. The first one is the year, the second the name of the car maker and the third the model. // The quantity of cars in the inventory should be set to zero.                                                 ;// Constructor that uses one parameter. The parameter is a reference to a CarStock object that cannot be modified.// The constructor must initialize all member variables according to the object provided as parameter.              getCarsInStock(                );// Accessor function that returns the current quantity of cars in stock.            addNewCar(                       );// Function that takes a number of cars received from the manufacturer // as a parameter and adds this value to the quantity in inventory                  sale(                    );// Function that takes a number of units sold as a parameter and// updates the quantity in inventory for this car. Inventory can’t be negative.private:string year;  // variable holds 20 char for the year the car was manufactured                     ; // variable holds the car manufacturer name                     ; // variable holds the car model name                  ;    // variable holds number of units in stock}; //Function definition(Implementation)//Type the implementation code:                    (                            ){ // Constructor that uses three parameters. The first the year, the second the name of the manufacturer and // the third the model name. // The quantity in the inventory should be set to zero.}                      (                            ){// Constructor that uses one parameter. The parameter is a reference to a CarStock object that cannot be modified.// The constructor must initialize all member variables according to the object provided as parameter.}              getCarsInStock (                ){// Accessor function that returns the current quantity of cars in stock.  }            addNewCar (                       );{// Function that takes a number of units received from a manufacturer// as a parameter and adds this value to the quantity in inventory  }                sale (                    );{// Function that takes a number of units sold as a parameter and// updates the quantity in inventory for this car. Inventory can’t be negative.}