概述
类A,B1,B2,C在同一个cpp里写(Class.cpp)。分开麻烦的写一个里面省事。
上代码:
#include<iostream>
#include<string>
class A
{
public:
std::string firstName;
public:
A()
{
firstName = "NO FIRST NAME";
}
A(std::string S)
{
firstName = S;
}
void OutName()
{
std::cout << "firstName: " << firstName << std::endl;
}
};
class B1 :virtual public A
{
public:
std::string secondName;
public:
B1(std::string first, std::string second) :A(first), secondName(second)
{
}
B1(std::string second)
{
secondName = second;
firstName = "3";
}
B1()
{
secondName = "NO SECOND NAME"; firstName = "NO FIRST NAME";
}
void OutName()
{
std::cout << "first name:" << firstName << " second name:" << secondName << std::endl;
}
};
class B2 :virtual public A
{
public:
std::string secondName2;
public:
B2(std::string first, std::string second) :A(first), secondName2(second)
{
}
B2(std::string second)
{
secondName2 = second;
firstName = "1";
}
B2()
{
secondName2 = "NO SECOND NAME"; firstName = "NO FIRST NAME";
}
void OutName()
{
std::cout << "first name:" << firstName << " second name:" << secondName2 << std::endl;
}
};
//类C继承类B2,B1。类B2,B1都继承自A。A类中成员变量的值和类继承的顺序有关系,最后继承的类会先赋值。
class C :public B2, public B1
{
public:
std::string cName;
public:
C(std::string b1, std::string b2, std::string c) :B1(b1), B2(b2), cName(c)
{}
C()
{
cName = "NO CNAME";
secondName = "NO SECONDNAME";
secondName2 = "NO SECONDNAME2";
}
void OutName()
{
std::cout << "A name:" << firstName << " B2 name:" << secondName2 <<" B name:"<<secondName<<" C name:" << cName << std::endl;
}
};
接下来在main函数中调用。
#include”Class.cpp“
void main()
{
C c("li", "wang", "zhang");
c.OutName();
}
运行结果:
将类C继承顺序改为
运行结果:
结论:类C继承类B2,B1。类B2,B1都继承自A。A类中成员变量的值和类继承的顺序有关系,最后继承的类会先赋值。第一次最后继承的类为B1,A类成员firstName为3。第二次最后继承的类为B2,A类的成员firstName为1。
最后
以上就是想人陪百褶裙为你收集整理的类C继承类B1和类B2,类B1和类B2继承自类A。在类C中给类A变量赋值的顺序,与类C的继承顺序有关系的全部内容,希望文章能够帮你解决类C继承类B1和类B2,类B1和类B2继承自类A。在类C中给类A变量赋值的顺序,与类C的继承顺序有关系所遇到的程序开发问题。
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