Question

IN C++ PLEASE

Given a Student class, create a class with following characteristics

• The class name should be ClassRoom.
• Private variable students to maintain the list of Student objects.
• Function addStudent with input parameter name (string) and rollNo(int) adds a new student in “students” list.
• Method getAllStudents should return all the students in ClassRoom.

Input
    Jack

1

    Jones

    2

    Marry

    3

    where,

• First & Second line represent a student’s name and roll number. And so on.

Output

    1 - Jack

    2 - Jones

    3 - Marry

Assume that,

• Maximum “students” count can be 10.

Given Code:

#include<iostream>
#include<cstring>
#include <algorithm>
using namespace std;

class Student{
public:
string name;
int rollNo;
};

   //write your code here

int main()
{
string name;
char temp[20];
int rollNo, N, i;
Student * students;
ClassRoom classRoom;
i=0;
while(getline(cin, name) && cin.getline(temp,20)){
rollNo = atoi(temp);
classRoom.addStudent(name, rollNo);
i++;
}
N = i;
students = classRoom.getAllStudents();
for(int i=0 ; i < N; i++){
cout << (students+i)->rollNo << " - " << (students+i)->name;
if(i<N-1)
cout<<endl;
}
return 0;
}

Answer 1

#include<iostream>

#include<cstring>

#include <algorithm>

using namespace std;

class Student{

public:

string name;

int rollNo;

Student(){

}

Student(string n, int r){

name = n;

rollNo = r;

}

};

class ClassRoom{

public:

Student stud[10];

int count;

ClassRoom(){

count = 0;

}

void addStudent(string str,int roll){

Student s(str,roll);

stud[count++] = s;

}

Student * getAllStudents(){

return stud;

}

};

//write your code here

int main()

{

string name;

char temp[20];

int rollNo, N, i;

Student * students;

ClassRoom classRoom;

i=0;

while(getline(cin, name) && cin.getline(temp,20)&&i<10){

rollNo = atoi(temp);

classRoom.addStudent(name, rollNo);

i++;

}

N = i;

students = classRoom.getAllStudents();

for(int i=0 ; i < N; i++){

cout << (students+i)->rollNo << " - " << (students+i)->name;

if(i<N-1)

cout<<endl;

}

return 0;

}

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SEE OUTPUT

PLEASE COMMENT if there is any concern.

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