Thread: SDL code generating Segmentation fault

I picked up on SDL not long ago and its going pretty slow so far. Here is the code in c of tutorial 3 from the lazyfoo guide. The 2 problems I am having with my code is that I am always getting a segmentation fault at the end of the execution of the code, which I dont really understand why. And seconly, my even handling is obviously borked since it is not responding to the closing of the window.

What am I doing wrong? I have to work this kink out before I move on to more advanced tutorials but I am pretty clueless whats going wrong. It is the code between line 31-52 that are handling the events for reference.

Code:

#include <SDL2/SDL.h>



//Forward declerations of functions.
int init(const char* title, int xpos, int ypos, int height, int width, int flags);
void close();
int loadmedia();


//Image screens
SDL_Window* Window = NULL;
SDL_Surface* ScreenSurface = NULL;
SDL_Surface* XOut = NULL;


int main(int argc, char* args[])
{
    const int SCREEN_HEIGHT = 640;
    const int SCREEN_WIDTH = 480;
    int running = 0;


    if(init("ATTACK!", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, SCREEN_HEIGHT, SCREEN_WIDTH, SDL_WINDOW_SHOWN) == 0)
    {
        printf("SDL Failed: %s.\n", SDL_GetError());
        return 1; //Something went wrong
    }
    else
    {
        if(loadmedia() == 1)
        {
            //Main loop flag
            int quit = 0;


            //Event variable
            SDL_Event event;


            //While application is running
            while( quit == 0 )
            {
                //Handle events on queue
                while( SDL_PollEvent( &event ) != 0 )
                {
                    //User requests quit
                    if( event.type == SDL_QUIT )
                    {
                        quit = 1;
                    }
                }


            //Apply the image
            SDL_BlitSurface( XOut, NULL, ScreenSurface, NULL );


            //Update the surface
            SDL_UpdateWindowSurface( Window );
            }


        }
        else
        {
            //Image application failed.
            printf("Image could be loaded: %s", SDL_GetError());
        }
    }


    //Exit SDL
    close();


    return 0;
}


int init(const char* title, int xpos, int ypos, int height, int width, int flags)
{
    int success = 1;
    if(SDL_Init(SDL_INIT_VIDEO) == 0)
    {
        //If SDL_Init succeeded.
        Window = SDL_CreateWindow(title, xpos, ypos, height, width, flags);


        if(Window == NULL)
        {
            //Window creation failed!
            printf("Window could not be created: %s", SDL_GetError());
            success = 0;;


        }
        else
        {
            printf("Window succeded\n");
            ScreenSurface = SDL_GetWindowSurface(Window);
        }




    }
    else
    {
        //If SDL_Init failed!
        printf("SDL init failed with error: %s", SDL_GetError());
        success = 0;
    }


    return success;
}




int loadmedia()
{
    //Loading success flag
    int success = 1;


    //Load splash image
    XOut = SDL_LoadBMP( "image.bmp" );
    if( XOut == NULL )
    {
        printf( "Unable to load image %s! SDL Error: %s\n", "image.bmp", SDL_GetError() );
        success = 0;
    }


    return success;
}


void close()
{
    //Deallocate surface from SDL_LoadBMP
    SDL_FreeSurface( XOut );
    XOut = NULL;


    //Destroy window
    SDL_DestroyWindow( Window );
    Window = NULL;


    //Quit SDL subsystems
    SDL_Quit();
}