Example Program For Multiple Inheritance Using C++ - SVRR TECH

#include<iostream>

using namespace std;

class roll

{

protected:

char no[20];

public:

void getroll();

};

class sub

{

protected:

int s1,s2,s3,s4,total;

float avg;

public:

void getsub();

void average();

};

class student:public roll,public sub

{

public:

void display();

};

void roll::getroll()

{

cout<<"\n Enter roll number:";

cin>>no;

}

void sub::getsub()

{

cout<<"\n Enter subject marks:";

cout<<"s1:";

cin>>s1;

cout<<"s2:";

cin>>s2;

cout<<"s3:";

cin>>s3;

cout<<"s4:";

cin>>s4;

}

void sub::average()

{

total=s1+s2+s3+s4;

cout<<"TOTAL="<<total;

avg=total/4;

cout<<"\n\n AVERAGE="<<avg;

}

void student::display()

{

if(s1>=39&s2>=39&s3>=39&s4>=39)

{

if(avg>=95)

{

cout<<"\n Grade O";

}

else if(avg=90)

{

cout<<"\n Grade A";

}

else if(avg>=90)

{

cout<<"\n Grade B";

}

else if(avg>=80)


{

cout<<"\n Grade C";

}

else if(avg>=70)

{

cout<<"\n Grade D";

}

else if(avg>=60)

{

cout<<"\n Grade E";

}

else if(avg>=40)

{

cout<<"Grade F";

}

else

{

cout<<"FAIL";

}

}

}

int main()

{

int i,n;

student s[10];

cout<<"Enter the no. of students:";

cin>>n;

for(i=0;i<n;i++)

{

s[i].getroll();

}

for(i=0;i<n;i++)

{

s[i].getsub();

s[i].average();

}

for(i=0;i<n;i++)

{

s[i].display();

}

return 0;

}

OUTPUT:

BY

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