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bittware
Joined: 03 Apr 2004
Posts: 199
Helped: 1
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 27 Sep 2004 15:01 Basic C program question: If had defined global variable... |
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Hello programming gurus,
If I had defined global variable in one .c file and in another .c file, a subroutine function also need use it. There are two approach to implement it.
1, use EXTERN reference
2, use function formal parameter
My question:
Do these two methods have essential difference?
Which approach is more reasonable?
Thanks in advance.
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bittware
Joined: 03 Apr 2004
Posts: 199
Helped: 1
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| 03 Oct 2004 14:48 Re: Basic C program question: If had defined global variable |
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Anyone could give me some prompt? 
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stefanh
Joined: 21 Jan 2004
Posts: 7
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| 03 Oct 2004 17:54 Re: Basic C program question: If had defined global variable |
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| Maybe you should explain what a function formal parameter is. give an example.
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otakung
Joined: 14 Jan 2003
Posts: 31
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| 04 Oct 2004 2:16 Basic C program question: If had defined global variable... |
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I don't sure I understand your question.
But it's very good if you have example or more information.
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