SDL2 on Debian

#include<iostream>
# include "SDL2/SDL.h"
using namespace std;

int main(intargc, char*argv[])
{
    cout<<"Start"<<endl;

    const int SCREEN_WIDTH = 800;
    const int SCREEN_HEIGHT = 600;

    if(SDL_Init(SDL_INIT_AUDIO)<0){
        cout<<"SDL init failed."<endl;
        return1;
    }

    // initialize screen
    SDL_Window*window=SDL_CreateWindow("Hello world!", SDL_WINDOWPOS_UNDEFINED,
        SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);

    if(window==NULL){
        SDL_Quit();
        return2;
    }

    SDL_Render*render=SDL_CreateRender(window,-1, SDL_Render_PREENTVSYNC);
    SDL_Texture*texture=SDL_CreateTexture(render, SDL_PIXELFORMAT_RGBA888,
        SDL_TEXTUREACCESS_STATIC, SCREEN_WIDTH, SCREEN_HEIGHT);

    if(render==NULL) {
        cout<<"Could not create render"<<endl;
        SDL_DestroyWindow(window);
        SDL_Quit();
        return3;
    }

    if(texture==NULL){
        cout<<"Could not create texture"<<endl;
        SDL_DestroyRenderer(render);
        SDL_DestroyWindow(window);
        SDL_Quit();
        return4;
    }

    // prepare memory
    Uint32*buffer=new Uint32 [SCREEN_WIDTH*SCREEN_HEIGHT];

    memset(buffer,0, SCREEN_WIDTH*SCREEN_HEIGHT*sizeof(Uint32));

    // set every 4 bytes as color into memory
    for (inti=0;i<SCREEN_WIDTH*SCREEN_HEIGHT;i++) {
        buffer[i] = 0x008080FF;
    }

    // update screen
    SDL_UpdateTexture(texture, NULL, buffer, SCREEN_WIDTH*sizeof(Uint32));
    SDL_RenderClear(render);
    SDL_RenderCopy (render, texture, NULL, NULL);
    SDL_RenderPresent(render);

    bool quit = false;
    SDL_Event;

    while(!quit){
        while(SDL_PollEvent(&event)){
            if(event.type==SDL_QUIT){
                quit = true;
            };
        }
        cout<<"Loop"<<endl;
    }

    // finalize screen
    delete [ ] buffer;
    SDL_DestroyRenderer(render);
    SDL_DestroyTexture(texture);
    SDL_DestroyWindow(window);
    SDL_Quit();

    cout<<"End"<<endl;

    return 0;
}

$g++-omain main.cpp`sdl2-config --cflags--libs`-lSDL2
$ ./main
Start
Loop
Loop
Loop
Loop
Loop
        // Omitted
Loop
Loop
Loop
Loop^C//ctrl+c
Loop
End