Comment by prirun

One of the most "fun" things with Fortran is the EQUIVALENCE stmt. It specifies that two variables share the same memory, even if they are different types. You can also do array equivalences, so:

  INTEGER ARR1(10), ARR2(5)
  EQUIVALENCE (ARR1(6), ARR2)
  ARR2(1) = 10

will also set ARR1(6) to 10.