SDL_Surface *image = NULL;
       SDL_Texture *texture = NULL;

       image = SDL_LoadBMP("img/ciel.bmp");

       if(image == NULL)
       {
            SDL_DestroyRenderer(renderer);
            SDL_DestroyWindow(window);
            SDL_ExitWithError("Impossible de créer l'image");
       }
        texture = SDL_CreateTextureFromSurface(renderer, image);
        SDL_FreeSurface(image);

        if(texture == NULL)
        {
            SDL_DestroyRenderer(renderer);
            SDL_DestroyWindow(window);
            SDL_ExitWithError("Impossible de creer la texture");
        }
        SDL_Rect rectangle;
        if(SDL_QUERY(texture, NULL, NULL, &rectangle.w, &rectangle.h) != 0) // &rectangle = structure simple pas un pointeur
        {
            SDL_DestroyRenderer(renderer);
            SDL_DestroyWindow(window);
            SDL_ExitWithError("Impossible de charger la texture");
        }

        rectangle.x = (500 - rectangle.w) / 2;
        rectangle.y = (400 - rectangle.h) / 2;

        if(SDL_RenderCopy(renderer, texture, NULL, &rectangle) != 0)
        {
            SDL_DestroyRenderer(renderer);
            SDL_DestroyWindow(window);
            SDL_ExitWithError("Impossible d'afficher la texture");
        }

       SDL_RenderPresent(renderer);