RE: [Dev-C++] Use of const qualifier

[Ioannis V. <no...@ho...>]

> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Scott Williams
> Sent: Thursday, October 31, 2002 11:38 PM
> To: Dev-Cpp-Users@Lists. Sourceforge. Net
> Subject: [Dev-C++] Use of const qualifier
> 
> 
> Hi,
> 
> You've all been so helpful, I'm back for more . . .
> 
> I'm curious about the use of the "const" qualifier as it applies to
> prototyping function arguments.  In particular, suppose I 
> have a function:
> 
> double myfunc(double x, double *y)
> 
> where myfunc uses the values of x and the array members of y 
> but doesn't
> change them.  Is there then an efficiency (speed) to be 
> gained by instead
> declaring:
> 
> double myfunc(const double x, const double *y)?
> 
> Are there other advantages/disadvantages?


The main benefit is type safety, that is protection from accidental
errors.


Ioannis

* Ioannis Vranos
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