def ab():
    print("Modul Fungsi Kalkulator")

print ("______KALKULATOR_________");
def kalkulator ():
    def tambah():
        print ('1.penjumlahan')
        a=input('Masukkan nilai a =')
        b=input('Masukkan nilai b =')
        c = a+b
        print ('a+b='),c
        print (' ')
        tanya()
