- 类的访问权限有三种:public、protected、private。
- public类型的变量或成员函数可以被实例对象访问,protected和private不可以被实例对象访问。但两者在继承等方面有区别。
class people {
public:
int publicAge;
protected:
int protectedAge;
private:
int privateAge;
};
int main() {
people p;
p.publicAge;//can access
p.protectedAge;//can't access
p.privateAge;//can't access
}