Прокомментировать функционал программы

//-----------------------------------------------------------------------------------------------------
#pragma hdrstop
//-----------------------------------------------------------------------------------------------------
#include <conio.h>      //áèáëèîòåêà ïîäêëþ÷åíèÿ ôóíêöèè getch()
#include <iostream.h> //áèáëèîòåêà äëÿ cin è cout
#include <malloc.h>    //áèáëèîòåêà äëÿ äèíàìè÷åñêîãî âûäåëåíèÿ ïàìÿòè
#include <fstream.h>   //áèáëèîòåêà äëÿ ââîäà/âûâîäà â ôàéë
#include <windows.h> //áèáëèîòåêà èñïîëüçóåòñÿ â ôóíêöèè RUS
#include <math.h>       //áèáëèîòåêà ìàòåìàòè÷åñêèõ ôóíêöèé
#include <ctype.h>      // áèáëèîòåêà ïðîâåðêè ïðèíàäëåæíîñòè ñèìâîëîâ
#include <stdlib.h>      // áèáëèîòåêà íåêîòîðûõ ñòàíäàðòíûõ ôóíêöèé
#include <string.h>      // áèáëèîòåêà ôóíêöèé ðàáîòû ñî ñòðîêàìè
//
char bufRus[256];
//-----------------------------------------------------------------------------------------------------
char* RUS(const char*text) //ôóíêöèÿ ïîääåðæêè ðóññêîãî ÿçûêà
{
CharToOem(text,bufRus);
return bufRus;
}
struct NOTE{
char NAME[20],
TELE[15];
unsigned BDAY[3];
};
//-----------------------------------------------------------------------------------------------------
#pragma argsused
int main()
{
const int k=4;
NOTE BNOTE[k], T;
int i,j;
char Number[15];
for(i=0;i<k;i++)
 {
A : printf("\nName? ");
cin>>(BNOTE[i].NAME);
if(strlen(BNOTE[i].NAME)==0) goto A;
printf("\nPhone number? ");
cin>>(BNOTE[i].TELE);
printf("\nBirthday (YYYY MM DD)? ");
for(j=0;j<3;j++)scanf("%u",&BNOTE[i].BDAY[j]);
 
 }
for(i=0;i<k;i++)
for(j=0;j<k-i-1;j++)
if((long)1000*BNOTE[j].BDAY[0]+50*BNOTE[j].BDAY[1]+BNOTE[j].BDAY[2]>
(long)1000*BNOTE[j+1].BDAY[0]+50*BNOTE[j+1].BDAY[1]+BNOTE[j+1].BDAY[2])
 {
 T=BNOTE[j];
 BNOTE[j]=BNOTE[j+1];
 BNOTE[j+1]=T;
 }
for(i=0;i<k;i++)
  {
printf("\nName: %s \nPhone number: %s \nBirthday: %u %u %u\n\n",
BNOTE[i].NAME, BNOTE[i].TELE,
BNOTE[i].BDAY[0],BNOTE[i].BDAY[1],BNOTE[i].BDAY[2]);
  }
printf("\nNumber for the seach? ");
 cin>>(Number);
 j=0;
for(i=0;i<k;i++)
if(!strcmp(Number,BNOTE[i].TELE))
  {
printf("\nName: %s \nPhone number: %s \nBirthday: %u %u %u\n\n",
BNOTE[i].NAME, BNOTE[i].TELE,
BNOTE[i].BDAY[0],BNOTE[i].BDAY[1],BNOTE[i].BDAY[2]);
j=1;
  }
if(!j)printf("\nNo such person!\n");
getch();
return 0;
 }