1.封装,public,private作用就是这个目的. 类外只能访问public成员而不能方位private成员: private成员只能被类成员和友元访问: 2.继承,protected的作用就是这个目的: protected成员可以被子类对象访问,但不能被类外的访问: 3.公有继承:class A : public B #include<iostream> #include<assert.h> using namespace std; class A{ public: int…
原文链接:A re-introduction to JavaScript (JS tutorial) Why a re-introduction? Because JavaScript is notorious for being the world's most misunderstood programming language. It is often derided as being a toy, but beneath its layer of deceptive simplicity…