Access violation at SDL_CreateRenderer - sdl

Question

I use vc++ 2010 express and currently working on a project but when I try to use SDL_CreateRenderer function I get this error:
First-chance exception at 0x6c8037be in Oyun Projem.exe: 0xC0000005: Access violation reading location 0x00000010.
Unhandled exception at 0x6c8037be in Oyun Projem.exe: 0xC0000005: Access violation reading location 0x00000010.
The program '[320] Oyun Projem.exe: Native' has exited with code -1073741819 (0xc0000005).
at this line:
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
here is the code
#include "stdafx.h"
int main(int argc, char* argv[])
{
SDL_Init(SDL_INIT_VIDEO);
SDL_Window *window;
SDL_Renderer *renderer;
window = NULL;
window = SDL_CreateWindow("My first RPG!", 100, 100, 100, 100, SDL_WINDOW_SHOWN);
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
return 0;
}
Here is what I see when debugging:

Answer 1

SDL_CreateWindow returns NULL if there is a failure. Your code needs to check for this.
// Your code:
window = SDL_CreateWindow("My first RPG!", 100, 100, 100, 100, SDL_WINDOW_SHOWN);
// Add the following:
// Check that the window was successfully made
if (window == NULL) {
// In the event that the window could not be made...
printf("Could not create window: %s\n", SDL_GetError());
return 1;
}