import projek1 as a
import projek2 as b
import projek3 as c
ulang = ''
while ulang :
    print()
    if ulang ==  'y' :
        print("lanjut")
    elif ulang == 't':
        print("Terimakasih")
        break
a.main_menu()
b.perhitungandasar()
c.persegi()




