Fortran, Stupid Questions

Zssfssz · 12-01-2011, 08:16 PM

Ok these thing would seem trivial for a math-geared language but my book didn't say anything.
How do I preform simple mathematics withought PARAMATER these might still need to vary.
Also how do I assine a integer a value withought PARAMAYER as these would still need to vary.
Sorry! Used to the C/C++ way of just using parathses and that doesnt seem to work.

NevemTeve · 12-02-2011, 02:49 AM

Have you googled for "example fortran"?

http://en.wikibooks.org/wiki/Fortran/Fortran_examples

colucix · 12-02-2011, 04:30 AM

Here is a very basic introduction to Fortran I suggest to our novices: http://www.dur.ac.uk/resources/its/i...8fortran90.pdf. The issue is about basic Fortran syntax: if you need to define a PARAMETER, that is a constant use the PARAMETER attribute, otherwise declare a variable without it, e.g.

Code:

PROGRAM TEST
  IMPLICIT NONE
  INTEGER, PARAMETER :: constant = 5
  INTEGER :: variable, i
  DO i = 1, 10
    variable = i + constant
    WRITE(*,*) 'My variable now is ', variable
  END DO
END PROGRAM TEST

Zssfssz · 12-02-2011, 08:52 AM

Oooooohhhhhh!
That works! For some reason I can't assine variables in the top ~12 lines of my program.
That got me really confused. There was also an error multiplying a number in a 2d array.