RGB NA HSL

int RGB_na_HSL(float R, float G, float B){
        float _R, _G, _B, H, S, L,  max, min, delta;
        int i; // co jest maxem


        if (R <= 255 && R >= 0 && G <= 255 && G >= 0 && B <= 255 && B >= 0){
                _R = R / 255;
                _G = G / 255;
                _B = B / 255;

                max = _R; i = 1;
                if (_G > max) {max = _G; i = 2;}
                if (_B > max) {max = _B; i = 3;}

                min = _R;
                if (_G < min) min = _G;
                if (_B < min) min = _B;

                delta = max - min;

                // OBLICZANIE L
                L = (max + min) / 2;

                // OBLICZANIE S
                if (delta == 0) S = 0;
                else S = delta / (1 - abs(2 * L - 1));

                // OBLICZANIE H
                switch (i){
                case 1:
                        H = (_G - _B) / delta;
                        H = fmodf(H, 6);
                        H *= 60;
                        break;
                case 2:
                        H = 60 * (((_B - _R) / delta) + 2);
                        break;
                case 3:
                        H = 60 * (((_R - _G) / delta) + 4);
                        break;
                }

                // Zaokrąglenie
                cout.setf(ios::fixed);
                cout.precision(1);

                // Poprawki procentowe
                S *= 100;
                L *= 100;
                cout << "RGB(" << R << ", " << G << ", " << B << ")->HSL(" << H << "st, " << S << "%, " << L << "%)" << endl << endl;
                return 0;
        }
        else return -1;
}