//Simple inheritance
#include <iostream>
using namespace std;
//base class
class Student
{
protected:
int sno;
char sname[20];
};
// derived clasds
class Mpc:public Student
{
private:
int maths,phy,che;
public:
void get()
{
cout<<"Enter no and name?";
cin>>sno>>sname;
cout<<"Enter Maths,phy & che marks?";
cin>>maths>>phy>>che;
}
void dis(){
cout<<sno<<"\t\t"<<sname<<endl;
cout<<maths<<"\t\t"<<phy<<"\t\t"<<che<<"\n";
}
};
int main()
{
Mpc obj;
cout<<sizeof(obj)<<endl;
obj.get();
obj.dis();
return 0;
}
// multi level inheritance
#include <iostream>
using namespace std;
//base class
class Student
{
protected:
int sno;
char sname[20];
};
// derived class
class Lang:public Student{
protected:
int eng,tel;
};
// derived clasds
class Mpc:public Lang
{
private:
int maths,phy,che;
public:
void get()
{
cout<<"Enter no and name?";
cin>>sno>>sname;
cout<<"Enter eng and tel marks?";
cin>>eng>>tel;
cout<<"Enter Maths,phy & che marks?";
cin>>maths>>phy>>che;
}
void dis(){
cout<<sno<<"\t\t"<<sname<<endl;
cout<<eng<<"\t\t"<<tel<<"\n";
cout<<maths<<"\t\t"<<phy<<"\t\t"<<che<<"\n";
}
};
int main()
{
Mpc obj;
cout<<sizeof(obj)<<endl;
obj.get();
obj.dis();
return 0;
}
output :
Enter no and name?101 Scott
Enter eng and tel marks?66 77
Enter Maths,phy & che marks?88 99 90
101 Scott
66 77
88 99 90
-------------------------
// multi level multi line inheritance
#include <iostream>
using namespace std;
//base class
class Student
{
protected:
int sno;
char sname[20];
};
// derived class
class Lang:public Student{
protected:
int eng,tel;
};
//derived class
class Pc:public Lang{
protected:
int phy,che;
};
// derived clasds
class Mpc:public Pc
{
private:
int maths;
public:
void get()
{
cout<<"Enter no and name?";
cin>>sno>>sname;
cout<<"Enter eng and tel marks?";
cin>>eng>>tel;
cout<<"Enter Maths,phy & che marks?";
cin>>maths>>phy>>che;
}
void dis(){
cout<<sno<<"\t\t"<<sname<<endl;
cout<<eng<<"\t\t"<<tel<<"\n";
cout<<maths<<"\t\t"<<phy<<"\t\t"<<che<<"\n";
}
};
// derived clasds
class Bpc:public Pc
{
private:
int bot,zoo,phy,che;
public:
void get()
{
cout<<"Enter no and name?";
cin>>sno>>sname;
cout<<"Enter eng and tel marks?";
cin>>eng>>tel;
cout<<"Enter phy,che,bot & zoo marks?";
cin>>phy>>che>>bot>>zoo;
}
void dis(){
cout<<sno<<"\t\t"<<sname<<endl;
cout<<eng<<"\t\t"<<tel<<"\n";
cout<<bot<<"\t\t"<<phy<<"\t\t"<<che<<"\t\t"<<zoo<<"\n";
}
};
int main()
{
Mpc m;
m.get();
m.dis();
Bpc b;
b.get();
b.dis();
return 0;
}
Enter no and name?101 Babe
Enter eng and tel marks?45 56
Enter Maths,phy & che marks?56 67 78
101 Babe
45 56
56 67 78
Enter no and name?102 Scott
Enter eng and tel marks?78 76
Enter phy,che,bot & zoo marks?56 56 56 56
102 Scott
78 76
56 56 56 56
---------------------------------------------------------
// concept of reusability of code
#include <iostream>
using namespace std;
//base class
class Student
{
protected:
int sno;
char sname[20];
public:
void get(){
cout<<"Enter no and name?";
cin>>sno>>sname;
}
void dis(){
cout<<sno<<"\t\t"<<sname<<endl;
}
};
// derived class
class Lang:public Student{
protected:
int eng,tel;
public:
void get(){
Student::get();
cout<<"Enter eng and tel marks?";
cin>>eng>>tel;
}
void dis(){
Student::dis();
cout<<eng<<"\t\t"<<tel<<"\n";
}
};
//derived class
class Pc:public Lang{
protected:
int phy,che;
public:
void get(){
Lang::get();
cout<<"Enter Phy and che marks?";
cin>>phy>>che;
}
void dis(){
Lang::dis();
cout<<phy<<"\t\t"<<che<<"\n";
}
};
// derived clasds
class Mpc:public Pc
{
private:
int maths;
public:
void get()
{
Pc::get();
cout<<"Enter Maths marks?";
cin>>maths;
}
void dis(){
Pc::dis();
cout<<maths<<"\n";
}
};
// derived clasds
class Bpc:public Pc
{
private:
int bot,zoo;
public:
void get()
{
Pc::get();
cout<<"Enter bot & zoo marks?";
cin>>bot>>zoo;
}
void dis(){
Pc::dis();
cout<<bot<<"\t\t"<<zoo<<"\n";
}
};
int main()
{
Mpc m;
m.get();
m.dis();
Bpc b;
b.get();
b.dis();
return 0;
}
output:
Enter no and name?101 Babe
Enter eng and tel marks?55 55
Enter Phy and che marks?66 66
Enter Maths marks?78
101 Babe
55 55
66 66
78
Enter no and name?102 Tiger
Enter eng and tel marks?67 78
Enter Phy and che marks?78 89
Enter bot & zoo marks?78 78
102 Tiger
67 78
78 89
78 78
