hello.cpp

#include "SDL.h"
#include "SDL_image.h"
#include <string>
#include <iostream>

int main(int argc, char *argv[]) {
    if (SDL_Init(SDL_INIT_VIDEO) != 0){
        std::cout << "SDL_Init Error: " << SDL_GetError() << std::endl;
        return 1;
    }

    SDL_Window *win = SDL_CreateWindow("Hello World!", 100, 100, 640, 480, SDL_WINDOW_SHOWN);
    if (win == nullptr){
        std::cout << "SDL_CreateWindow Error: " << SDL_GetError() << std::endl;
        SDL_Quit();
        return 1;
    }

    SDL_Renderer *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    if (ren == nullptr){
        SDL_DestroyWindow(win);
        std::cout << "SDL_CreateRenderer Error: " << SDL_GetError() << std::endl;
        SDL_Quit();
        return 1;
    }

    SDL_Init(IMG_INIT_PNG);
    std::string imagePath = "SDL_logo.png";
    SDL_Surface *bmp = IMG_Load(imagePath.c_str());
    if (bmp == nullptr){
        SDL_DestroyRenderer(ren);
        SDL_DestroyWindow(win);
        std::cout << "SDL_LoadPNG Error: " << SDL_GetError() << std::endl;
        SDL_Quit();
        return 1;
    }

    SDL_Texture *tex = SDL_CreateTextureFromSurface(ren, bmp);
    SDL_FreeSurface(bmp);
    if (tex == nullptr){
        SDL_DestroyRenderer(ren);
        SDL_DestroyWindow(win);
        std::cout << "SDL_CreateTextureFromSurface Error: " << SDL_GetError() << std::endl;
        SDL_Quit();
        return 1;
    }

    //A sleepy rendering loop, wait for 3 seconds and render and present the screen each time
    for (int i = 0; i < 3; ++i){
        //First clear the renderer
        SDL_RenderClear(ren);
        //Draw the texture
        SDL_RenderCopy(ren, tex, NULL, NULL);
        //Update the screen
        SDL_RenderPresent(ren);
        //Take a quick break after all that hard work
        SDL_Delay(1000);
    }

    SDL_DestroyTexture(tex);
    SDL_DestroyRenderer(ren);
    SDL_DestroyWindow(win);
    SDL_Quit();
}