Error when reading in float in Fortran

Question

This should be quite simple, but I can\'t manage to read in a floating point number in Fortran. My program test.f looks like this:

  PROGRAM TEST
  ope         


        

Answer 1

I would suggest reading/writing list formatted data, unless you have a very strong reason to do otherwise. assuming that you're reading in from a file with just a single float or integer in a single line, like this

123.45
11
42

then this should do the reading

real*8 :: x,y,z
open(1,file=filename)
read(1,*)x
read(1,*)y
read(1,*)z
close(1)