using System;
public class CPU {
public string model;
public CPU(string model) {
this.model = model;
}
public void Start() {
Console.WriteLine(model + " started");
}
}
public class Intel : CPU {
public bool convertible;
public Intel(string model, bool convertible) : base(model) {
this.convertible = convertible;
}
}
public class AMD : CPU {
public bool sidecar;
public AMD(string model, bool sidecar) : base(model) {
this.sidecar = sidecar;
}
public void PullWheelie() {
Console.WriteLine(model + " pulling a wheelie!");
}
}
class Test {
public static void Main() {
Intel myIntel = new Intel("MR2", true);
// cast myIntel to CPU (upcast)
CPU myCPU = (CPU) myIntel;
Console.WriteLine("myCPU.model = " + myCPU.model);
myCPU.Start();
}
}
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