指针传参的问题，请看代码

// Danjicheng.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "iostream.h"
#include "string.h"

/*首先定义一个动物类作为基类*/
class Dongwu
{
protected:
    char* Name;
    char* Aihao;
public:
    Dongwu();
    void SetName(char* name);
    void SetAihao(char* aihao);
    void xianshi();
};
Dongwu::Dongwu()
{
    Name = new char[20];
    Aihao = new char[20];
}
void Dongwu::SetName(char* name)
{
    strcpy(Name,name);
}
void Dongwu::SetAihao(char* aihao)
{
    strcpy(Aihao,aihao);
}
void Dongwu::xianshi()
{
    cout<<"基类显示:"<<'\t';
    cout<<"动物类中，一个名为:"<<Name<<"的未知的动物,爱好:"<<Aihao<<'\n';
}

/*创建一个继承与动物类的 狗类 Dog类*/
class Dog:public Dongwu
{
protected:
    int* Age;
public:
    Dog();
    void DogAge(int* age);
    void Dogxianshi();
    ~Dog();
};
void Dog::Dogxianshi()
{
    cout<<"Dog中显示"<<'\t';
    cout<<"狗类中，一个名为:"<<Name<<"的狗,平时喜欢:"<<Aihao<<"今年:"<<Age<<"岁了"<<'\n';
}
void Dog::DogAge(int* age)
{
    Age = age;
}
Dog::Dog()
{
    Age = new int[1];
    Name = new char[20];
    Aihao = new char[20];
}
Dog::~Dog()
{
    
}

int main(int argc, char* argv[])
{
    Dog dog;
    dog.SetName("皮皮");
    dog.SetAihao("咬人");
    dog.DogAge(20);//此处有错误，肯定是传参的时候出现了问题，求教帮助！！！！！！！！！！！！！！
    dog.xianshi();
    dog.Dogxianshi();
}


提示错误如下：
--------------------Configuration: Danjicheng - Win32 Debug--------------------
Compiling...
Danjicheng.cpp
D:\.net程序\Danjicheng\Danjicheng.cpp(75) : error C2664: 'DogAge' : cannot convert parameter 1 from 'const int' to 'int *'
        Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
D:\.net程序\Danjicheng\Danjicheng.cpp(78) : warning C4508: 'main' : function should return a value; 'void' return type assumed
Error executing cl.exe.

Danjicheng.exe - 1 error(s), 1 warning(s)