TextNumerical TextLiteral::convertToTextNum()
{
    TextNumerical array;

    for ( int i=0; i<getLength(); i++ )
    {
        if ( !isLetter ( text[i] ) )
        {
            continue;
        }

        UINT a = (UINT) text[i] - 65;

        array.push_back ( a );
    }

    return array;
}





class TextNumerical
{   // TextNumerical is a structure with two arrays -- an input
                        // and an output.The data has been converted into numbers
                        // for encoding and decoding.
private:
    std::vector<UINT> input;
    std::vector<UINT> output;

public:
    TextNumerical() {};
    TextNumerical( std::vector<UINT> );

    void push_back ( const UINT& val ) { output.push_back ( val ); }

    std::vector<UINT> getOutput() const { return output; }
    std::vector<UINT> getInput() const { return input; }
    int getSize() const { return input.size(); }
    void reserve( std::string::size_type size ) { output.reserve( size ); }

    void printOutput() const;

    std::string convertToText() const;
};

#include <string>
#include <vector>
#include <iostream>
typedef unsigned int UINT;
class TextNumerical
{
private:
    std::vector<UINT> input;
    std::vector<UINT> output;

public:
    void push_back ( const UINT& val ) { output.push_back ( val ); }
    int getSize() const { return input.size(); }
    void printOutput() const;
    std::string convertToText() const;
};
class TextLiteral
{
private:
    std::string text;
public:
    TextLiteral( std::string input):text(input){};
    int getLength() const { return text.length(); }
    TextNumerical convertToTextNum();
};
void TextNumerical::printOutput() const
{
    for ( int i=0; i<input.size(); i++ )
    {
        std::cout << output[i] << " ";
    }

    std::cout << std::endl;
}
int main ()
{
            TextLiteral plain( "FOO" );
            TextNumerical plainTN( plain.convertToTextNum() );
plainTN.printOutput();
return 0;
}

TextNumerical TextLiteral::convertToTextNum()
{
    TextNumerical array;
    for ( int i=0; i<getLength(); i++ )
    {
        UINT a = (UINT) text[i] - 65;
        array.push_back ( a );
    }
    return array;
}

UINT a = (UINT) text[i] - 65;