How to Read in Execution Flags in Fortran

[MRLX69]

Hi All,



Just like to know if it's possible for a Fortran program to read in data on execution.

For example, in JAVA, say if I've written a program for matrix factorization, I can type in the command line:
"java mfact q" for QR factorization or "java mfact c" for Cholesky decomposition, where mfact is my compiled JAVA program.

When I run my Fortran program in command line-interface, the best I can do is run the program, then have the program to ask me for a flag, like:

  PRINT *, 'Please input the type of factorization you require:'
  READ *, factype

So I'd have to run the program, then it asks me what I want to do. But I'd like to supply the argument as I'm executing the program. Is this possible in Fortran?


Thanks

Mike

 

[Mark44]

It's very easy to pass command-line arguments in C or C++. I believe you can do something similar with getarg. Here's a link to a man page: http://www.oc.nps.edu/~bird/web101/fortran/getarg.html

 

[MRLX69]

It's very easy to pass command-line arguments in C or C++. I believe you can do something similar with getarg. Here's a link to a man page: http://www.oc.nps.edu/~bird/web101/fortran/getarg.html

Ah, thanks!

This is what I needed.

 

[silverfrost]

You can do (just about) anything in Fortran that you need to do. Fortran was used to:

1. Write an operating system (Prime mini's had an OS written mainly in Fortran)
2. Write a 80386 DOS extender (DBOS)
3. Write a Fortran compiler
4. Write a LISP compiler (really)
5. Write a terminal emulator