#include <iostream>
#include <conio.h>
using namespace std;

int main ();
{
   setlocal(0,"Russian")
   
   const int Size = 1024;
   int gigabites;
   int megabytes;
   int kbytes;
   unsigned long long bytes;
  
   cout << "введите кол-во гигабайт:";
   cin >> gigabytes;
  
   megabytes = gigabites * Size;
   kbytes = megabytes * Size;
   bytes = (unsigned long long) kbytes * (unsigned long long) Size;
   
   cout << "gigabytes:\t" << gigabytes << endl;
   cout << "megabytes:\t" << megabytes << endl;
   cout << "kbytes:\t" << kbytes << endl:
   cout << "bytes:\t" << kbytes << endl;
 
   _getch();
   return 0;
}