prot_bas.cpp
来源：互联网 发布：淘宝美工任职资格 编辑：程序博客网 时间：2024/04/30 11:26
<iframe name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"></iframe> #include <iostream.h>
class base
{
protected:
int i, j;
public:
void setij(int a, int b)
{
i=a;
j=b;
}
void showij(void) {cout << i << " " << j << endl;}
};
class derived : protected base
{
private:
int k;
public:
void setk(void)
{
setij(10,12);
k = i * j;
}
void showall(void)
{
cout << k << " ";
showij();
}
};
void main(void)
{
derived object;
// object.setij(2,3); This is an illegal command, because setij is a protected member of derived.
// object.showij(); This is also an illegal command.
object.setk();
object.showall();
}
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