Slip 17 - B) Design two base classes Student (S_id, Name, Class) and Competition (C_id, C_Name). Derive a class Stud_Comp(Rank) from it. Write a menu driven program to perform following functions: i. Accept information. ii. Display information. iii. Display Student Details in the ascending order of Rank of a specified competition. (Use array of objects)

 Solution:

#include<iostream>

#include<conio.h>

using namespace std;

class Student

{

public:

int roll;

char name[10],std[10];

void accept_s();

void display_s();

};

void Student :: accept_s()

{

cout<<"Enter the Roll No : ";

cin>>roll;

cout<<"Enter The Name of Student : ";

cin>>name;

cout<<"Enter the Class of Student : ";

cin>>std;

}

void Student :: display_s()

{

cout<<"Student Details are : \n";

cout<<roll<<"\t"<<name<<"\t"<<std<<endl;

}

class Competition

{

public:

int cid;

char cname[10];

void accept_c();

void display_c();

};

void Competition :: accept_c()

{

cout<<"Enter the Competition ID : ";

cin>>cid;

cout<<"Enter The Name of Competition : ";

cin>>cname;

}

void Competition :: display_c()

{

cout<<"Competition Details are : \n";

cout<<cid<<"\t"<<cname<<endl;

}

class StudComp : public Student , public Competition

{

public:

int rank;

void accept_sc();

void display_sc();

friend void sort(StudComp,int);

};

void StudComp :: accept_sc()

{

cout<<"Enter the Rank : ";

cin>>rank;

}

void StudComp :: display_sc()

{

cout<<"Rank : "<<rank<<endl;

}

void sort(StudComp *sc,int num)

{

for(int i=0;i<num-1;i++)

{

for(int j=0;j<num-i-1;j++)

{

if(sc[j].rank>sc[j+1].rank)

{

int temp = sc[j].rank;

sc[j].rank=sc[j+1].rank;

sc[j+1].rank=temp;

int tempr = sc[j].Student::roll;

sc[j].Student::roll = sc[j+1].Student::roll;

sc[j+1].Student::roll = tempr;

}

}

}

cout<<"Sorted Details : "<<endl;

for(int i=0;i<num;i++)

{

   cout<<"Rank : "<<sc[i].rank<<" "<<"Roll NO : "<<sc[i].Student::roll<<"  "<<endl;

}

}

main()

{

int num;

cout<<"Enter the Number of Student : ";

cin>>num;

StudComp *sc = new StudComp[num];

for(int i=0;i<num;i++)

{

sc[i].Student::accept_s();

sc[i].Competition::accept_c();

sc[i].StudComp::accept_sc();

sc[i].Student::display_s();

sc[i].Competition::display_c();

sc[i].StudComp::display_sc();

}

sort(sc,num);

}