using System;
public interface ICompare {
int GetValue();
int Compare(ICompare ic);
}
abstract public class BaseClass : ICompare {
int nValue;
public BaseClass(int nInitialValue) {
nValue = nInitialValue;
}
public int Value {
get { return GetValue(); }
}
public int GetValue() {
return nValue;
}
abstract public int Compare(ICompare bc);
}
public class SubClass : BaseClass {
public SubClass(int nInitialValue)
: base(nInitialValue) {
}
override public int Compare(ICompare ic) {
return GetValue().CompareTo(ic.GetValue());
}
}
public class Class1 {
public static void Main(string[] strings) {
SubClass sc1 = new SubClass(10);
SubClass sc2 = new SubClass(20);
MyFunc(sc1, sc2);
}
public static void MyFunc(ICompare ic1, ICompare ic2) {
Console.WriteLine("bc1.Compare(bc2) returned {0}",
ic1.Compare(ic2));
}
}
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