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

void szyfrCezara(int klucz, char tab[])
{
    int dl = 63;
    for(int i=0;i<dl;i++)
    {
         tab[i] = (tab[i] - 'A' + klucz)%26 + 'A';
    }

}
void szyfrRot13(char tab[])
{
    int dl = 63;
    for(int i=0; i<dl;i++)
    {
        if( tab[i] >= 'A' && tab[i] <= 'Z' )
        {
             tab[i] = ( tab[i] + 13 - 'A' ) % 26 + 'A';
        }
    }

}


int main()
{
    char tabpodst[26]={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
    char tab[63]={'R','I','T','B','B','F','O','R','C','V','E','A','F','N','C','T','E','M','V','T','G','Q','R','F','H','E','Z','A','P','C','B','V','B','A','P','H','B','B','P','R','Z','C','L','A','V','S','V','H','T','C','R','L','G','E','L','P','J','T','C','R','U','V','J'};

  int klucz = 6;


    szyfrCezara(-klucz,tab); //deszyfrowanie
    cout<<"Po rozszyfrowaniu: "<<tab<<endl;
    szyfrRot13(tab);
    cout<<"aaa: "<<tab<<endl;
  system("pause");
  return 0;
}