C++ hybrid Inheritance

class sports
{
protected:
float score;
public:
void getscore(float);
void putscore();
};

class sports: public test, public sports
{
.............
............
};

class test: public student
{
………
………
};

class sports: public test, public sports
{
………….
…………
};

#include <iostream>
using namespace std;
class student
{
protected:
int roll;
public:
void getnumber(int a)
{
roll=a;
}
void putnumber()
{
std::cout << "roll number" << roll << "\n";
}
};
class test: public student
{
protected:
float part1,part2;
public:
void getmarks( float x, float y)
{
part1=x;
part2=y;
}
void putmarks()
{
std::cout << "marks obtain:" << "\n" << "part1=" << part1 << "\n" << "part2="<< part2 << "\n";
}
};
class sports
{
protected:
float score;
public:
void getscore(float s)
{
score=s;
}
void putscore()
{
std::cout << "sports wt:" << score << "\n\n";
}
}; class result: public test, public sports
{
float total;
public:
void display();
};
void result::display()
{
total=part1+part2+score;
putnumber();
putmarks();
putscore();
cout << "total score :" << total << "\n";
}
int main()
{
result student1;
student1.getnumber(1234);
student1.getmarks(27.5,33.0);
student1.getscore(6.0);
student1.display();
return 0;
}

Roll no: 1234
marks obtained:
part1=27.5
part2=33
sports wt:6
total score:66.5