SFML 2.0 Выбор случайного цвета

//array of colors for random selecting
const sf::Color colorArray[5]={sf::Color::Cyan, sf::Color::Blue, sf::Color::Green, sf::Color::Red, sf::Color::Yellow };
srand(time(NULL));
RectangleShape block(Vector2f(10, 10));
block.setFillColor(colorArray[rand()%5]);
block.setPosition(0, 0);
window.draw(block);

int main()
{
    srand(time(NULL));
    RenderWindow window(VideoMode(Rows*16, Cols*16), "Blocks");
    RectangleShape block(Vector2f(16, 16));
    block.setFillColor(colorArray[rand()%5]);
    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                window.close();
        }
 
       window.clear();
       block.setPosition(0, 0);
       window.draw(block);
       window.display();
    }
    system("pause");
    return 0;
 
}

#include <SFML/Graphics.hpp>
 
using namespace sf;
 
int main()
{
    Color colorArray[5] = {Color::Red, Color::Green, Color::Blue, Color::Magenta, Color::Cyan};
    
    srand(time(NULL));
    RenderWindow window(VideoMode(600/*Rows*16*/, 400/*Cols*16*/), "Blocks");
    RectangleShape block(Vector2f(16, 16));
    block.setFillColor(colorArray[rand()%5]);
    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                window.close();
        }
 
       window.clear();
       block.setPosition(0, 0);
       window.draw(block);
       window.display();
    }
    //system("pause");
    return 0;
 
}

#include <SFML/Graphics.hpp>
 
using namespace sf;
 
int main()
{
    Color colorArray[6] = {Color::White, Color::Red, Color::Green, Color::Blue, Color::Magenta, Color::Cyan};
    
    srand(time(NULL));
    RenderWindow window(VideoMode(600, 400), "Blocks");
    RectangleShape block(Vector2f(156, 156));
    block.setFillColor(colorArray[0]);
    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                window.close();
        }
 
       window.clear();
       block.setPosition(0, 0);
       window.draw(block);
       window.display();
    }
    //system("pause");
    return 0;
 
}