PROGRAM of INHERITANCE

#include<iostream.h>
#include<conio.h>
class base1
{
protected:
int sd1;
public:
base1()
{
sd1=100;
}
~base1()
{
}
int sample_funone()
{
return(sd1);
}
};
class base2
{
protected:
int sd2;
public:
base2()
{
sd2=200;
}
~base2()
{
}
int sample_funtwo()
{
return(sd2);
}
};
class D1:public base1,public base2
{
int mydata;
public:
D1()
{
mydata=300;
}
~D1()
{
}
int myfun()
{
return(mydata+sd1+sd2);
}
};
void main()
{clrscr();
base1 s1;
base2 s2;
D1 s3;
cout<<s3.base1::sample_funone();
cout<<s3.base2::sample_funtwo();
getch();
}