a program in C that uses SDL to draw the graph of the function y = x^2

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

#define WIDTH 800
#define HEIGHT 600

int main(int argc, char *argv[]) {
    SDL_Init(SDL_INIT_VIDEO);
    SDL_Window *window = SDL_CreateWindow("Graph Calculator", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, WIDTH, HEIGHT, 0);
    SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0);

    double xMin = -10, xMax = 10, yMin = -10, yMax = 10;
    double xStep = (xMax - xMin) / WIDTH;
    double yStep = (yMax - yMin) / HEIGHT;

    for (double x = xMin; x <= xMax; x += xStep) {
        double y = pow(x, 2);
        int xPixel = (x - xMin) / xStep;
        int yPixel = HEIGHT - (y - yMin) / yStep;
        SDL_RenderDrawPoint(renderer, xPixel, yPixel);
    }

    SDL_RenderPresent(renderer);

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

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

    return 0;
}