//If the timer is running
        if( running == true )
        {
            //The timer's time as a string
            std::stringstream time;
        
            //Convert the timer's time to a string
            time << "Timer: " << SDL_GetTicks() - start;
        
            //Render the time surface
            seconds = TTF_RenderText_Solid( font, time.str().c_str(), textColor );

//rest of the code            

//The headers#include "SDL/SDL.h"#include "SDL/SDL_image.h"#include "SDL/SDL_ttf.h"#include <string>#include <sstream>//Screen attributesconst int SCREEN_WIDTH = 640;const int SCREEN_HEIGHT = 480;const int SCREEN_BPP = 32;//The surfacesSDL_Surface *background = NULL;SDL_Surface *startStop = NULL;SDL_Surface *seconds = NULL;SDL_Surface *screen = NULL;//The event structureSDL_Event event;//The fontTTF_Font *font = NULL;//The color of the fontSDL_Color textColor = { 0xF0, 0xFF, 0xF0 };SDL_Surface *load_image( std::string filename ) {    //The image that's loaded    SDL_Surface* loadedImage = NULL;        //The optimized surface that will be used    SDL_Surface* optimizedImage = NULL;        //Load the image    loadedImage = IMG_Load( filename.c_str() );        //If the image loaded    if( loadedImage != NULL )    {        //Create an optimized surface        optimizedImage = SDL_DisplayFormat( loadedImage );                //Free the old surface        SDL_FreeSurface( loadedImage );                //If the surface was optimized        if( optimizedImage != NULL )        {            //Color key surface            SDL_SetColorKey( optimizedImage, SDL_RLEACCEL | SDL_SRCCOLORKEY, SDL_MapRGB( optimizedImage->format, 0, 0xFF, 0xFF ) );        }    }        //Return the optimized surface    return optimizedImage;}void apply_surface( int x, int y, SDL_Surface* source, SDL_Surface* destination, SDL_Rect* clip = NULL ){    //Holds offsets    SDL_Rect offset;        //Get offsets    offset.x = x;    offset.y = y;        //Blit    SDL_BlitSurface( source, clip, destination, &offset );}bool init(){    //Initialize all SDL subsystems    if( SDL_Init( SDL_INIT_EVERYTHING ) == -1 )    {        return false;        }        //Set up the screen    screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE );        //If there was in error in setting up the screen    if( screen == NULL )    {        return false;        }        //Initialize SDL_ttf    if( TTF_Init() == -1 )    {        return false;        }        //Set the window caption    SDL_WM_SetCaption( "Timer Test", NULL );        //If everything initialized fine    return true;}bool load_files(){    //Load the background image    background = load_image( "background3.png" );        //Open the font    font = TTF_OpenFont( "lazy.ttf", 36 );        //If there was a problem in loading the background    if( background == NULL )    {        return false;        }        //If there was an error in loading the font    if( font == NULL )    {        return false;    }        //If everything loaded fine    return true;}void clean_up(){    //Free the surfaces    SDL_FreeSurface( background );    SDL_FreeSurface( startStop );    //Close the font    TTF_CloseFont( font );        //Quit SDL_ttf    TTF_Quit();        //Quit SDL    SDL_Quit();}int main( int argc, char* args[] ){    //Quit flag    bool quit = false;        //The timer starting time    Uint32 start = 0;        //The timer start/stop flag    bool running = true;        //Initialize    if( init() == false )    {        return 1;    }        //Load the files    if( load_files() == false )    {        return 1;    }        //Generate the message surface    startStop = TTF_RenderText_Solid( font, "Press S to start or stop the timer", textColor );        //Start the timer    start = SDL_GetTicks();        //While the user hasn't quit    while( quit == false )    {        //While there's an event to handle        while( SDL_PollEvent( &event ) )        {            //If a key was pressed            if( event.type == SDL_KEYDOWN )            {                //If s was pressed                if( event.key.keysym.sym == SDLK_s )                {                    //If the timer is running                    if( running == true )                    {                        //Stop the timer                        running = false;                        start = 0;                      }                    else                    {                        //Start the timer                        running = true;                        start = SDL_GetTicks();                      }                }            }                        //If the user has Xed out the window            else if( event.type == SDL_QUIT )            {                //Quit the program                quit = true;            }        }                //Apply the background        apply_surface( 0, 0, background, screen );                //Apply the message        apply_surface( ( SCREEN_WIDTH - startStop->w ) / 2, 200, startStop, screen );                //If the timer is running        if( running == true )        {            //The timer's time as a string            std::stringstream time;                    //Convert the timer's time to a string            time << "Timer: " << SDL_GetTicks() - start;                    //Render the time surface            seconds = TTF_RenderText_Solid( font, time.str().c_str(), textColor );                        //Apply the time surface            apply_surface( ( SCREEN_WIDTH - seconds->w ) / 2, 50, seconds, screen );                    //Free the time surface            SDL_FreeSurface( seconds );        }                //Update the screen        if( SDL_Flip( screen ) == -1 )        {            return 1;            }    }            //Clean up    clean_up();        return 0;    }