C/Visual C - Conio en visual studio...gran duda..!!!!!

#include <windows.h>

#include <stdlib.h>

#include <iostream>

using namespace std;

int main()

{

    HANDLE hOut;

    hOut = GetStdHandle(STD_OUTPUT_HANDLE);

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED);

    cout << "Red     " << flush;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED |

                            FOREGROUND_INTENSITY);

    cout << "Red" << endl;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_GREEN);

    cout << "Green   " << flush;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_GREEN |

                            FOREGROUND_INTENSITY);

    cout << "Green" << endl;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_BLUE);

    cout << "Blue    " << flush;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_BLUE |

                            FOREGROUND_INTENSITY);

    cout << "Blue" << endl;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED |

                            FOREGROUND_GREEN);

    cout << "Yellow  " << flush;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED |

                            FOREGROUND_GREEN |

                            FOREGROUND_INTENSITY);

    cout << "Yellow" << endl;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_GREEN |

                            FOREGROUND_BLUE);

    cout << "Cyan    " << flush;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_GREEN |

                            FOREGROUND_BLUE |

                            FOREGROUND_INTENSITY);

    cout << "Cyan" << endl;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_BLUE |

                            FOREGROUND_RED);

    cout << "Magenta " << flush;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_BLUE |

                            FOREGROUND_RED |

                            FOREGROUND_INTENSITY);

    cout << "Magenta" << endl;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED |

                            FOREGROUND_GREEN |

                            FOREGROUND_BLUE);

    cout << "White   " << flush;

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED |

                            FOREGROUND_GREEN |

                            FOREGROUND_BLUE |

                            FOREGROUND_INTENSITY);

    cout << "White" << endl;

    /*getchar ();*/

// Set text color as Yellow with white background.

SetConsoleTextAttribute(

    GetStdHandle( STD_OUTPUT_HANDLE ),

    FOREGROUND_INTENSITY              | // Set Text color

    FOREGROUND_RED | FOREGROUND_GREEN | // Text color as Yellow.

    BACKGROUND_INTENSITY              | // Set Background color

    BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE ); // White Bg

    return 0;

}

#include <windows.h>

#include <stdio.h>

#include<stdlib.h>

int main()

{

    HANDLE hOut;

    hOut = GetStdHandle(STD_OUTPUT_HANDLE);

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED);

    printf ("Red     \n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED |

                            FOREGROUND_INTENSITY);

    printf ("Red\n" );

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_GREEN);

    printf ("Green   \n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_GREEN |

                            FOREGROUND_INTENSITY);

    printf ("Green\n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_BLUE);

    printf ("Blue    \n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_BLUE |

                            FOREGROUND_INTENSITY);

    printf ("Blue\n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED |

                            FOREGROUND_GREEN);

    printf ("Yellow  \n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED |

                            FOREGROUND_GREEN |

                            FOREGROUND_INTENSITY);

    printf ("Yellow\n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_GREEN |

                            FOREGROUND_BLUE);

    printf ("Cyan    \n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_GREEN |

                            FOREGROUND_BLUE |

                            FOREGROUND_INTENSITY);

    printf ("Cyan\n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_BLUE |

                            FOREGROUND_RED);

    printf ("Magenta \n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_BLUE |

                            FOREGROUND_RED |

                            FOREGROUND_INTENSITY);

    printf ("Magenta\n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED |

                            FOREGROUND_GREEN |

                            FOREGROUND_BLUE);

    printf ("White   \n");

    SetConsoleTextAttribute(hOut,

                            FOREGROUND_RED |

                            FOREGROUND_GREEN |

                            FOREGROUND_BLUE |

                            FOREGROUND_INTENSITY);

    printf ("White\n");

// Set text color as Yellow with white background.

   /* SetConsoleTextAttribute(

    GetStdHandle( STD_OUTPUT_HANDLE ),

    FOREGROUND_INTENSITY              | // Set Text color

    FOREGROUND_RED | FOREGROUND_GREEN | // Text color as Yellow.

    BACKGROUND_INTENSITY              | // Set Background color

    BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE ); // White Bg*/

    return 0;

}