[求助]有个c++题目 - 编程论坛

#2

xuyuke2007-04-15 09:04

怎么没人帮忙我啊？

#3

踏魔狼2007-04-15 09:31

有一带参数的构造函数对BOY初始化，并同时调用父类函数初始化父类的私有变量。
CHILD(int a) : DADY(a){BOY=a;}

#4

菜鸟上路2007-04-15 09:55

以下是引用xuyuke在2007-4-14 21:04:32的发言：
#include<iostream.h>
class DADY
{
public:
DADY(){}
~DADY(){}
DADY(int a){GIRL=a;}
void SETCHILD(int a){GIRL=a;}
int GETCHILD() const {return GIRL;}
private:
int GIRL;
};
class CHILD : public DADY
{
public:
CHILD(){}
~CHILD(){}
CHILD(int a,int b){BOY=a;DADY(b);}
void SETCHILD(int a){BOY=a;}
int GETCHILD() const {return BOY;}
private:
int BOY;
};
void main()
{
DADY b;
CHILD d;
b.SETCHILD(30);
d.SETCHILD(40);
cout <<b.GETCHILD()<<endl;
cout<<d.GETCHILD()<<endl;

}

#5

song42007-04-15 10:15

CHILD(int a){BOY=a;DADY(b);}
这个B你要是什么都没有写
他怎么知道这个B是什么

#6

condor8882007-04-16 18:55

#include<iostream>
using namespace std;
class DADY
{
private :
int GIRL;
public:
DADY()
{
}
~DADY()
{
}
DADY(int a)
{
GIRL=a;
};
void SETCHILD(int a)
{
GIRL=a;
};
int GETCHILD() const
{
return GIRL;
};
};
class CHILD : public DADY
{
private:
int BOY;
public:
CHILD()
{
}
~CHILD()
{
}
CHILD(int a)
{
BOY=a;
DADY(b);
}
void SETCHILD(int a)
{
BOY=a;
}
int GETCHILD () const
{
return BOY;
}
};

int main()
{
DADY b;
CHILD d;
b.SETCHILD(30);
d.SETCHILD(40);
cout<<b.SETCHILD()<<endl;
cout<<d.SETCHILD()<<endl;
return 0;

}
不过还有错，
C:\1\1.cpp(61) : error C2660: 'SETCHILD' : function does not take 0 parameters
C:\1\1.cpp(62) : error C2660: 'SETCHILD' : function does not take 0 parameters

#7

condor8882007-04-16 18:56

那位高手在来调试下啊，在线等。。。。。。。。。

#8

condor8882007-04-16 19:01

CHILD d;
b.SETCHILD(30);
d.SETCHILD(40);
还有d哪有啊，这是什么意思

#9

condor8882007-04-16 19:08

不好意思，我打错了，是GETCHILD,而不是SETCHILD，解决了。

#10

condor8882007-04-16 19:11

完整的如下：
#include<iostream>
using namespace std;
class DADY
{
private :
int GIRL;
public:
DADY()
{
}
~DADY()
{
}
DADY(int a)
{
GIRL=a;
};
void SETCHILD(int a)
{
GIRL=a;
};
int GETCHILD() const
{
return GIRL;
};
};
class CHILD : public DADY
{
private:
int BOY;
public:
CHILD()
{
}
~CHILD()
{
}
CHILD(int a)
{
BOY=a;
DADY(b);
}
void SETCHILD(int a)
{
BOY=a;
}
int GETCHILD () const
{
return BOY;
}
};
int main()
{
DADY b;
CHILD d;
b.SETCHILD(30);
d.SETCHILD(40);
cout<<b.GETCHILD()<<endl;
cout<<d.GETCHILD()<<endl;
return 0;

}