省流：class 子类 : 继承方式 父类1, 继承方式 父类2...{};

C++中允许一个类继承多个类

多继承可能会引发父类中有同名成员出现，需要加作用域

代码示例

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#include<iostream>
using namespace std;

class Base1 {
public:
	Base1() {
		m_A = 100;
	}
	int m_A;
};

class Base2 {
public:
	Base2() {
		m_A = 200;
	}
	int m_A;
};

class son :public Base1, public Base2 {
public:
	son() {
		m_C = 300;
		m_D = 400;
	}
	int m_C;
	int m_D;
};

int main() {
	son s;
	cout << "sizeof son= " << sizeof(s) << endl;
	cout << "m_A= " << s.Base1::m_A << endl;
	cout << "m_A= " << s.Base2::m_A << endl;
	return 0;
}