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>From: Joel Fritz <JFritz@sharperimage.com> >Date: Wed, 23 Jan 2002 13:37:49 -0800 > >If I recall, isalpha() tests one character at a time. > >I think the prototype should look something like this (I didn't test it): > > d isalpha pr 10i 0 extproc('isalpha') > d testchar 1 value That seems sensible, but the other prototype was correct. The C prototype is int isalpha (int); But even if the C prototype were this int isalpha (char c); your prototype wouldn't be correct for RPG because of 2 things: 1. C thinks "char" is an integer type, RPG doesn't 2. C thinks "char" is a 4-byte integer type, when it comes to parameter passing, and RPG thinks it's 1 byte The V5R1 EXTPROC(*CWIDEN) can handle these problems for you. Otherwise, you need to jump through some hoops. (See the URL I posted in my previous "isalpha" post.) Barbara Morris
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