public static void Abstract_Classes_and_Functions()
{
// BaseAbs Babs = new BaseAbs(); // 错误 抽象类不能实例化
BaseAbs Abs1 = new DeriveAbs();
DeriveAbs DAbs1 = new DeriveAbs();
Abs1.AbstractMethod(); // 输出 DeriveAbs AbstractMethod
DAbs1.AbstractMethod(); // 输出 DeriveAbs AbstractMethod
}
public static void Abstract_Classes_and_Functions()
{
// BaseAbs Babs = new BaseAbs(); // 错误 抽象类不能实例化
BaseAbs Abs1 = new DeriveAbs();
DeriveAbs DAbs1 = new DeriveAbs();
Abs1.AbstractMethod(); // 输出 DeriveAbs AbstractMethod
DAbs1.AbstractMethod(); // 输出 DeriveAbs AbstractMethod
}