add model and purpose to this program

1 #include "Computer.h" void Computer::setYear(int y) { year = y; Computer:: Computer(): Computer(-1, "") {} Computer:: Computer(int y, string m) : Computer(y, m, "") {} Computer :: Computer(int y, string m, string p) { setYear(y); model = m; purpose = p; 13 int Computer::getYear() const {return year;} 15 17 Computer::~Computer() {cout