sum = 0
i = 0
print('----------------------------')
print('PROGRAM HITUNG RATA-RATA')
print('----------------------------')
while True:
 try:
     bilangan = int(input('Masukan bilangan bulat : '))
 except ValueError:
    print('Bukan bilangan bulat')
    continue
 
 sum += bilangan
 i += 1
 Rata2 = sum/i
 jawab = input('Lagi (y/n)? : ')
 if jawab == 'n':
     break

print('----------------------------')
print('Rata-ratanya adalah : ', Rata2)
