A program that creates a binary file

Program to create binary file : (c ++)

A program that creates a binary file by reading the data for the students from the terminal. The data of each student consist of roll no., name ( a string of 30 or lesser no. of characters) and marks.

#include<iostream.h>                                                    /*Header File*/

#include<fstream.h>                                                      /*Header File*/

#define m5                                                                     /*User Define Function*/

class student                                                                  /*Defining Class*/

{

      int   rollno   , marks;

      char nm[30];

      public:                                                                       /*Visibility Label*/

        
     void getdata()                                               /*Memberfunction With No Return Type*/

     {

            cout<<"\n Enter roll no. : ";                     /*Displaying Result*/                               

            cin>>rollno;

            char ch=cin.get();

            cout<<"\n Enter name of student : ";     /*Displaying Result*/                               

            cin.getline(nm,30);

            cout<<"\n Enter marks : ";                      /*Displaying Result*/                                

            cin>>marks;

      }

};

int main()

{

     student stu[m];

     fstream fio;

     fio.open("Student.txt",ios::binary|ios::out);

     for(int count=0;count<m;count++)

     {

        
        stu[count].getdata();

        fio.write((char *)&stu[count],sizeof(stu[count]));

     }

     fio.close();

     return 0;

}