int SDL_RenderClear(void)

#include <SDL/SDL.h>

int main(int argc, char** argv)
{
        // Initialize SDL.
        if (SDL_Init(SDL_INIT_VIDEO) < 0)
                return 1;
        
        // Create the window were we will draw.
        SDL_WindowID window = 
                SDL_CreateWindow("SDL_RenderClear",
                SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
                512, 512,
                SDL_WINDOW_SHOWN);
        
        // We must call SDL_CreateRenderer in order for draw calls to affect this window.
        SDL_CreateRenderer(window, -1, 0);
        
        // Select the color for drawing. It is set to red here.
        SDL_SetRenderDrawColor(255, 0, 0, 0);
        
        // Clear the entire screen to our selected color.
        SDL_RenderClear();
        
        // Up until now everything was drawn behind the scenes.
        // This will show the new, red contents of the window.
        SDL_RenderPresent();
        
        // Give us time to see the window.
        SDL_Delay(5000);
        
        // Always be sure to clean up
        SDL_Quit();
        return 0;
}