compiling fortran with f77 gcc 1

[ArmenD]

hi,

here is the code

SUBROUTINE sayhello()
WRITE(*,*) 'Hello World!'
END

I type " f77 -c helloImp.f" and i get...

helloImp.f:1:
   SUBROUTINE sayhello()
   ^
Invalid first character at (^) [info -f g77 M LEX]
helloImp.f:2:
   WRITE(*,*) 'Hello World!'
   ^
Invalid first character at (^) [info -f g77 M LEX]
helloImp.f:3:
   END
   ^
Invalid first character at (^) [info -f g77 M LEX]

any ideas? it's pretty simple, i don't know why it doesn't compile?

 

[ArkM]

Sacramental 7-th position?
Alas, I don't know can gcc f77 read free format...

 

[ArmenD]

what format does it expect?

 

[CaKiwi]

It expects statements to start in the 7th character position. Positions 1 to 5 are for labels and position 6 is for a continuation character.

      SUBROUTINE sayhello()
      WRITE(*,*) 'Hello World!'
      END

CaKiwi