// Use this for initialization
void Start()
{
baseClass baseClassInstance = new baseClass(2);
//派生类并不能继承基类中定义的含一个参数的构造函数
//derivedClass derivedClass = new derivedClass(3);
//在实例化派生类时，先要实例化其基类，逐步向上推，因此会从最基础的基类的构造函数开始逐步向下执行
derivedClass2 derivedClass2Instance = new derivedClass2();
}
// Use this for initialization
void Start()
{
derivedClass derivedClassInstance = new derivedClass(2);
//多层指定调用
derivedClass2 derivedClassInstance2 = new derivedClass2(2);
}
