C# Burç programı

def getBurc(gun, ay):
    if((ay == 1 and gun <= 20) or (ay == 12 and gun >= 21)):
        return "Oglak"
    elif((ay == 1 and gun >= 21) or (ay == 2 and gun <= 19)):
        return "Kova"
    elif((ay == 2 and gun >= 20) or (ay == 3 and gun <= 20)):
        return "Balik"
    elif((ay == 3 and gun >= 21) or (ay == 4 and gun <= 20)):
        return "Koc"
    elif((ay == 4 and gun >= 21) or (ay == 5 and gun <= 20)):
        return "Boga"
    elif((ay == 5 and gun >= 21) or (ay == 6 and gun <= 21)):
        return "Ikizler"
    elif((ay == 6 and gun >= 22) or (ay == 7 and gun <= 22)):
        return "Yengec"
    elif((ay == 7 and gun >= 23) or (ay == 8 and gun <= 23)):
        return "Aslan"
    elif((ay == 8 and gun >= 24) or (ay == 9 and gun <= 23)):
        return "Basak"
    elif((ay == 9 and gun >= 24) or (ay == 10 and gun <= 23)):
        return "Terazi"
    elif((ay == 10 and gun >= 24) or (ay == 11 and gun <= 22)):
        return "Akrep"
    elif((ay == 11 and gun >= 23) or (ay == 12 and gun <= 21)):
        return "Yay"
    else:
        return "Unknown"
    
def main():
    x = input("Dogum gununuzu girin: ")
    y = input("Dogum ayinizi girin: ")
    
    if(x.isnumeric() and y.isnumeric() and (1 <= int(y) <= 12) and (1 <= int(x) <= 31)):
        x = int(x)
        y = int(y)
        print(getBurc(x, y))
    else:
        print("HATA: Yanlis gun veya ay girisi yaptiniz!")
        main()
        
main()