100 lines
1.3 KiB
C++
100 lines
1.3 KiB
C++
#include <iostream>
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#include <cstring>
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#include <cstdlib>
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using namespace std;
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class A
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{
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public:
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int a;
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protected:
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int b;
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private:
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int c;
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public:
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A(int a, int b, int c) : a(a), b(b), c(c) {}
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public:
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void showA()
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{
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cout << "A: " << a << ", " << b << ", " << c << endl;
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}
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};
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class B : public A
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{
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public:
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B() : A(1, 3, 2) {}
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public:
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void showB()
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{
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showA();
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// B 类的成员函数内，可以访问父类的 public 、protected 成员
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// a, b 是父类的 public/protected 的成员变量
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cout << "B: " << a << ", " << b << endl;
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}
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};
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class C : protected B
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{
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public:
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C() : B() {}
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public:
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void showC()
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{
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showA();
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showB();
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cout << "C: " << a << ", " << b << endl;
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}
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};
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class D : private C
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{
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public:
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D() : C() {}
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public:
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void showD()
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{
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showA();
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cout << "D: " << a << ", " << b << endl;
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}
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};
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class E : public D
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{
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public:
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E() : D() {}
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public:
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void showE()
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{
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showA();
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// cout << "E: " << a << ", " << b << endl;
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}
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};
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int main()
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{
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// B b1;
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// b1.showA();
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// b1.showB();
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// C c1;
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// c1.showC();
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// D d1;
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// d1.showD();
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E e1;
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e1.showD();
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return 0;
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}
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