47 lines
719 B
C++
47 lines
719 B
C++
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// 继承中同名成员的处理方法
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#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 x;
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A(int x) : x(x) {}
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void show()
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{
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cout << "x = " << x << 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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private:
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int x;
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public:
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// B(int x) : A(x)
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// {
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// // 就近原则: this->x 是 B 类的，不是父类 A 的
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// this->x = x + 20;
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// }
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B(int x) : A(x), x(x + 20)
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{
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}
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void showX()
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{
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cout << "x = " << x << 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(10);
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b1.show(); // 从 A 类继承过来的方法，打印的是 A 类的 x
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b1.showX(); // B 类自己的，打印自己的 a
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return 0;
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}
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