SDL render multiple rect

//http://www.youtube.com/user/thecplusplusguy
//multiple rect
#include <SDL/SDL.h>

int main()
{
    SDL_Init(SDL_INIT_EVERYTHING);
    SDL_Surface* screen=SDL_SetVideoMode(640,480,32,SDL_SWSURFACE);

    Uint32 start;
    SDL_Event event;
    bool running=true;
    SDL_Rect rec1;
    SDL_Rect rec2;
    rec1.x=60;
    rec1.y=90;
    rec1.w=30;
    rec1.h=30;


    rec2.x=140;
    rec2.y=120;
    rec2.w=30;
    rec2.h=30;
    while(running)
    {
        start=SDL_GetTicks();
        while(SDL_PollEvent(&event))
        {
            switch(event.type)
            {
                case SDL_QUIT:
                    running=false;
                    break;
                case SDL_KEYDOWN:
                    switch(event.key.keysym.sym)
                    {
                        case SDLK_ESCAPE:
                            running=false;
                            break;
                    }
            }
        }

        SDL_FillRect(screen,&rec1,SDL_MapRGB(screen->format,255,0,0));
        SDL_FillRect(screen,&rec2,SDL_MapRGB(screen->format,0,0,255));
        SDL_Flip(screen);


        if(1000.0/30>SDL_GetTicks()-start)
            SDL_Delay(1000.0/30-(SDL_GetTicks()-start));
    }


    SDL_Quit();
}