text: import math
  x1 = 0.0
  x2 = 0.9
  x3 = -1.1
  x4 = -1
  x5 = 10
  x6 = 0
  x7 = "incorrect input"
  print(math.fabs(x1))
  print(math.fabs(x2))
  print(math.fabs(x3))
  print(math.fabs(x4))
  print(math.fabs(x5))
  print(math.fabs(x6))
  print(math.fabs(x7))