Simple C++ SDL2 example

#include <iostream>
#include <SDL2/SDL.h>

int main(int argc, char ** argv) {

    size_t width = 800;
    size_t height = 600;
    bool quit = false;

    SDL_Init(SDL_INIT_VIDEO);

    SDL_Window * window = SDL_CreateWindow("SDL2 Pixel Drawing",
        SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, width, height, 0);

    SDL_Renderer * renderer = SDL_CreateRenderer(window, -1, 0);
    SDL_Texture * texture = SDL_CreateTexture(renderer,
        SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STATIC, width, height);
    Uint32 * pixels = new Uint32[width * height];
    memset(pixels, 255, width * height * sizeof(Uint32));

    while(!quit) {
        SDL_UpdateTexture(texture, NULL, pixels, width * sizeof(Uint32));

        for(int n=0;n<1000;n++) {
            int x=rand()%width;
            int y=rand()%height;
            pixels[y * width + x] = rand()*100000;
        }

        SDL_Event event;
        while(SDL_PollEvent(&event)) {
            switch (event.type) {
                case SDL_QUIT:
                    quit = true;
                    break;
            }
            if(event.key.keysym.sym == SDLK_q) {
                quit = true;
                break;
            }
            else if(event.key.keysym.sym == SDLK_c) {
                memset(pixels, 255, width * height * sizeof(Uint32));
            }

        }

        SDL_RenderClear(renderer);
        SDL_RenderCopy(renderer, texture, NULL, NULL);
        SDL_RenderPresent(renderer);
    }

    delete[] pixels;
    SDL_DestroyTexture(texture);
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();

    return 0;
}

CXX = g++
# Update these paths to match your installation
# You may also need to update the linker option rpath, which sets where to look for
# the SDL2 libraries at runtime to match your install
SDL_LIB = -L/usr/lib/x86_64-linux-gnu/ -lSDL2 -Wl,-rpath=/usr/lib/x86_64-linux-gnu/
SDL_INCLUDE = -I/usr/include/
# You may need to change -std=c++11 to -std=c++0x if your compiler is a bit older
CXXFLAGS = -Wall -c -std=c++11 $(SDL_INCLUDE)
LDFLAGS = $(SDL_LIB)
EXE = rand_points

all: $(EXE)

$(EXE): rand_points.o
    $(CXX) $< $(LDFLAGS) -o $@

main.o: rand_points.cpp
    $(CXX) $(CXXFLAGS) $< -o $@

clean:
    rm *.o && rm $(EXE)