Drawing basic window with a pair of green lines using SDL2

window_test.cpp

#include <SDL.h>
#include <stdio.h>

const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;

int main(int argc, char* args[])
{
  SDL_Window* window = NULL;
  SDL_Renderer* renderer = NULL;
  SDL_Surface* screenSurface = NULL;
  SDL_Event event;

  SDL_Init(SDL_INIT_VIDEO);
  SDL_CreateWindowAndRenderer(SCREEN_WIDTH, SCREEN_HEIGHT, 0, &window, &renderer);

  SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
  SDL_RenderClear(renderer);

  SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);

  SDL_RenderDrawLine(renderer, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
  SDL_RenderDrawLine(renderer, SCREEN_WIDTH, 0, 0, SCREEN_HEIGHT);

  SDL_RenderPresent(renderer);

  while(1) {
    if (SDL_PollEvent(&event) && event.type == SDL_QUIT)
    {
      break;
    }
  }

  SDL_DestroyRenderer(renderer);
  SDL_DestroyWindow(window);
  SDL_Quit();

  return 0;
}