[punch_card]

unpossible.

       DO 100 I=1,10
  100  SUM = SUM + X(I)

No longer supported ? hWhat ? And don't get me started about COMMON and EQUIVALENCE.

To be blunt, FORTRAN 77 was probably the most practical language ever devised. What is this monster ?

I predict more code written in FORTRAN 77 is being used today that all of the code written in later dialects. And this will be the same for the next 20 years.

[AlexeyBrin]

Note that none of these will actually be removed from any compiler you are likely to use, but their use will be flagged if you ask for standards checking.