Fix beam throw function?

Question

C++ / C#

I'm making a 3D game and using the ray-casting method for this, everything seems to work fine for me, except for the cast ray function itself:

sf::Color cast_ray(float x, float y, float angle, int max_dist) {
    float x_pos = x;
    float y_pos = y;
    float x_step = sin(angle);
    float y_step = cos(angle);
    for (int i = 0; i < max_dist; i++) {
        x_pos += x_step;
        y_pos += y_step;
        int x_ = x_pos / x_step;
        int y_ = y_pos / y_step;
        printf("%i %i\n", x_, y_);
        if (x_>-1 && x_ < 10 && y_>-1 && y_ < 10) {
            if (map[x_][y_] == 1) {
                return sf::Color(255, 255, 255);
            }
        }
    }
    return sf::Color(0, 0, 0, 0);
}

I almost forgot to say that I use sfml and there is another very important point, if you look at the function and see that it is normal, please notify me about this, I could be mistaken about where the problem occurs.