print('------------------')
F = 0
dF = 10
while F <= 100:
    C = (F-32)*5/9.0
    print("%4d %6.2f" %(F, C))
    F = F + dF
print('------------------')

"""
Terminal> python f2c_table_while.py
------------------
   0 -17.78
  10 -12.22
  20  -6.67
  30  -1.11
  40   4.44
  50  10.00
  60  15.56
  70  21.11
  80  26.67
  90  32.22
 100  37.78
------------------
"""