assigning input file to stdin when debugging fortran in intel visual studio

[Linda_S_]

I want to run a fortran code in debug mode in visual studio.  the code reads input from stdin (unif 5).  I would like it to read from an input file.  Can you tell me how to assign my input file to stdin?

[mecej4]

You can do this by setting environment variables. See the details at https://software.intel.com/en-us/node/510821 .

[dboggs]

Do you really want to TEMPORARILY (e.g. for debugging) want to assign a file to unit 5? I.e. not permanently, in which case you would simply open the input file to another unit number?

[Linda_S_]

I tried setting the environment variable FORT5 to my file name (including path).  that didn't help the situation in the debugger.  when I run the code in visual studio a command prompt window opens and the code expects input there.   I don't want to change the code to open the file explicitly.  Thanks for your hellp

[Steven_L_Intel1 · Accepted solution]

This is VERY easy to do.

Right click on the project, select Properties > Debugging, In the field "Command Arguments" type:

< inputfilename.txt

By default it will look in the project directory.

[mecej4]

Linda S.: Please read the documentation fully. If, as is usual these days, you used UNIT=* rather than UNIT=5 for console input in READ statements, the variable to set is FOR_READ, not FORT5. I tried this in VS 2015, and the redirection of the input worked fine.

[Linda_S_]

Thank you Steve