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D open Pr * ExtProc( '_C_IFS_fopen' )
D * Value Options( *String )
D * Value Options( *String )
Wow. Can I ask where you found this example?You're calling the ILE C fopen() API for the IFS. But you're referring to it as open() (which happens to be the name of a different API that opens IFS files!) in your RPG code. That's REALLY confusing.
It's always been my policy to name the prototypes the same as the APIs. that way, if someone wants to look up info about the API call, they're able to search the internet or look at examples in the manuals, etc. Renaming it to something else makes that more difficult and more confusing.
If I were reading the code and I see open() being called, would it even occur to me to check the prototype to make sure you're actually calling open() instead of fopen()? Probably not.
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