自考新教材-p197

源程序：

#include<iostream>
using namespace std;

class BaseClass1
{
public:
int v1, v2;
BaseClass1();
BaseClass1(int, int);
~BaseClass1();
};
BaseClass1::BaseClass1()
{
cout << "BaseClass1 无参构造函数" << endl;
}

BaseClass1::BaseClass1(int m, int n) :v1(m), v2(n)
{
cout << "BaseClass1 带2个参构造函数" << endl;
}

BaseClass1::~BaseClass1()
{
cout << "BaseClass1 析构函数" << endl;
}

class BaseClass2
{
public:
int v1, v4;
BaseClass2();
BaseClass2(int, int);
~BaseClass2();
};
BaseClass2::BaseClass2()
{
cout << "BaseClass2 无参构造函数" << endl;
}

BaseClass2::BaseClass2(int m, int n) :v1(m), v4(n)
{
cout << "BaseClass2 带2个参构造函数" << endl;
}

BaseClass2::~BaseClass2()
{
cout << "BaseClass2 析构函数" << endl;
}

class DerivedClass :public BaseClass1, public BaseClass2
{
public:
int v3;
public:
DerivedClass();
DerivedClass(int);
DerivedClass(int, int, int, int);
~DerivedClass();
};
DerivedClass::DerivedClass()
{
cout << "DerivedClass 无参构造函数" << endl;
}

DerivedClass::DerivedClass(int k) :v3(k)
{
cout << "DerivedClass 带1个参构造函数" << endl;
}

DerivedClass::DerivedClass(int m, int n, int k, int t) : BaseClass1(m, n), BaseClass2(m, t), v3(k)
{
cout << "DerivedClass 带4个参构造函数" << endl;
}

DerivedClass::~DerivedClass()
{
cout << "DerivedClass 析构函数" << endl;
}

int main()
{
cout << "带参数对象的创建" << endl;
DerivedClass derivedCla1(1000, 2000, 3000, 4000);
cout << "v1=" << derivedCla1.BaseClass1::v1 << endl;
cout << "v2=" << derivedCla1.v2 << endl;
cout << "v1=" << derivedCla1.BaseClass2::v1 << endl;
cout << "v4=" << derivedCla1.v4 << endl;
cout << "v3=" << derivedCla1.v3 << endl;
system("pause");
return 0;
}

运行结果：