自考新教材-p240_1

源程式：

#include<iostream>

using namespace std;

class BaseClass1

{

protected:

int v1, v2;

public:

BaseClass1();

BaseClass1(int, int);

~BaseClass1();

void SetValue(int, int);

void PrintValue();

};

BaseClass1::BaseClass1() :v1(0), v2(0)

{

cout << "BaseClass1 無參構造函數" << endl;

}

BaseClass1::BaseClass1(int m, int n)

{

v1 = m;

v2 = n;

cout << "BaseClass1 帶2個參構造函數" << endl;

}

BaseClass1::~BaseClass1()

{

cout << "BaseClass1 析構函數" << endl;

}

void BaseClass1::SetValue(int m, int n)

{

v1 = m;

v2 = n;

}

void BaseClass1::PrintValue()

{

cout << "v1=" << v1 << "\tv2=" << v2;

}

class BaseClass2

{

protected:

int v1, v4;

public:

BaseClass2();

BaseClass2(int, int);

~BaseClass2();

void SetValue(int, int);

void PrintValue();

};

BaseClass2::BaseClass2() :v1(1), v4(1)

{

cout << "BaseClass2 無參構造函數" << endl;

}

BaseClass2::BaseClass2(int m, int n)

{

v1 = m;

v4 = n;

cout << "BaseClass2 帶2個參構造函數" << endl;

}

BaseClass2::~BaseClass2()

{

cout << "BaseClass2 析構函數" << endl;

}

void BaseClass2::SetValue(int m, int n)

{

v1 = m;

v4 = n;

}

void BaseClass2::PrintValue()

{

cout << "v1=" << v1 << "\tv4=" << v4;

}

class DerivedClass :public BaseClass1, public BaseClass2

{

public:

int v3;

public:

DerivedClass();

DerivedClass(int);

DerivedClass(int, int, int, int);

~DerivedClass();

void SetValue(int m, int n, int k, int h)

{

BaseClass1::SetValue(m, n);

BaseClass2::SetValue(2 * m, h);

v3 = k;

}

void SetValue(int m, int n, int k)

{

BaseClass1::SetValue(m, n);

BaseClass2::SetValue(2 * m, 2 * n);

v3 = -1;

}

void PrintValue();

};

DerivedClass::DerivedClass() :BaseClass1(0, 0), BaseClass2(0, 0), v3(0)

{

cout << "DerivedClass 無參構造函數" << endl;

}

DerivedClass::DerivedClass(int k)

{

v3 = k;

cout << "DerivedClass 帶1個參構造函數" << endl;

}

DerivedClass::DerivedClass(int m, int n, int k, int t) :BaseClass1(m, n), BaseClass2(m, t), v3(k)

{

cout << "DerivedClass 帶4個參構造函數" << endl;

}

DerivedClass::~DerivedClass()

{

cout << "DerivedClass 析構函數" << endl;

}

void DerivedClass::PrintValue()

{

BaseClass1::PrintValue();

cout << "\tv3=" << v3 << endl;

BaseClass2::PrintValue();

cout << endl;

}

int main()

{

cout << "不帶參數對象的建立" << endl;

DerivedClass derivedCla2;

derivedCla2.PrintValue();

system("pause");

return 0;

}

運作結果：