Fortran Which Fortran version to learn

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Fortran is a valuable language for computation in physics, and choosing the right version is crucial. While some suggest starting with Fortran 77 due to its simplicity, it's generally recommended to begin with Fortran 90 or later. Fortran 90 introduces features like array programming and object-oriented concepts, making it more suitable for modern applications and easier to debug compared to Fortran 77. The older version's reliance on common blocks and implicit variable declarations can lead to complications, particularly for beginners. Overall, Fortran 90 or newer versions are preferred for their advanced capabilities and better support for integration with Python.
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I have decided to learn Fortran over the summer. However there are various versions out there.
Which version would you recommend learning? I will be using Fortran for computation in physics
primarily. I will also be interfacing Python and Fortran together.
 
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This is not an unreasonable request is it?
Given the fortran versions: 77,90,95... which one would you recommmend?
Why would you recommend that particular version over any other?
 
I have just read that it easiest to start with fortran 77, then to work my way up from there.
The reason being that the newer versions have more sophisticated packages, etc.
Is this accurate?
 
I would say that there is no reason to start with anything older than Fortran 90. Fortran 90 starting going towards object-oriented programming, and quite frankly, if you try to debug anything written in F77, you'll quickly find yourself pulling your hair out.

Common blocks and implicit variable declaration will start you down a path you don't want to go.
 

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