Array of Struct sort

I have read many topics regarding sort but i wasn`t able to sort them. I am new in C++. What changes i must do to sort the names alphabetically ?

Code:

#include "stdafx.h"
#include <iostream>
#include <string>
using namespace std;

class classroom
{
public:
    string studentName;

    void classroom::createStudent(string);
};

void classroom::createStudent(string name)
{
    studentName=name;
}

int main()
{
    //number of students
    const int numstudents=10;
    
    //create structure
    classroom student[numstudents];

    //initialize variables
    student[0].createStudent("Alexa Trina");
    student[1].createStudent("George Ali");
    student[2].createStudent("Comina Riviera");
    student[3].createStudent("Dimitri Askin");
    student[4].createStudent("Erato Georgin");
    student[5].createStudent("Georgina Mare");
    student[6].createStudent("Konan Varvi");
    student[7].createStudent("Lampros Anesti");
    student[8].createStudent("Marina Parate");
    student[9].createStudent("Nikon Smith");

    return 0;//indicate that program end succesfully
}//end main

Thanks for you time!

Originally Posted by fukki

What changes i must do to sort the names alphabetically ?

1. #include <algorithm>
2. Define the less-than operator for your classroom class (operator<). Have this operator compare the std::string studentName member variable.
3. Call the stl std::sort function on your array.

...and presto your array is sorted.



From a design standpoint it does not make a lot of sense to have a classroom class that stores a single student... and then create an array of classroom objects (each storing a single student) to represent one "classroom". It would make more sense to have a student class representing a single student and then a classroom class representing a single classroom (of multiple students). The classroom object could have an internal std::vector<student> container that stores all the students for that class and an AddStudent function that creates a new named student object and inserts that onto the classroom object's internal student vector. But, that's just my opinion.