>Yes, it does
Header (.H) files and procedure (.PRG) files should be separate, in my opinion. For the sake of maintaining some order.
>What is the difference between to write a include.h file or a PRG file ?
>Sometimes I see #include file.h others I see set procedure to a file.prg
SET PROCEDURE ... makes functions in the file available.
#INCLUDE ... makes the constants, define with the #DEFINE command, available.
A constant is typically a single line, with a definition that might be used in several places in your program. For example,
#DEFINE MAXUSERS 5. The concept is somewhat similar to a variable. (I might explain the difference between variables and constants, but only after making sure you understand the difference between constants and functions!)
A function will typically have several commands, that do some specific task. It might also be invoked from several places of your program.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
