Solving Error "REAL Expression in DO Loop"

[jcang]

freal Loops?

Hi everybody..

I have a question.
Recently, I'm using g95 to run my Fortran 95 program.
But it occur an error, which is:

REAL expression in DO loop at <1> - to enable REAL loop parameters use -freal-loops

What is freal loop exactly?
and How to solve this problem?

Any help is appreciated.
Thanks.

 

[rcgldr]

Do loops normally use integers. To allow "reals" (floating point) to be used in loops, you need to add a command line parameter when invoking the compiler.