1.abstract 的应用
1 abstract class ShapesClass 2 { 3 public abstract int Area(); 4 } 5 class Square : ShapesClass 6 { 7 int side = 0; 8 9 public Square(int n) 10 { 11 side = n; 12 } 13 // Area method is required to avoid 14 // a compile-time error. 15 public override int Area() 16 { 17 return side * side; 18 } 19 20 21 }
2.
public interface I
{
int M();
}
public abstract class C : I
{
public abstract int M();
}
public class Des : C
{
public override int M()
{
return 100;
}
}
1 Square sq = new Square(12); 2 sq.Area(); 3 int asa = new Des().M();
原文：http://www.cnblogs.com/lizhenlin/p/5994637.html