Re: What does const char *s mean? is s a constant or *s?

From: pete (pfiland_at_mindspring.com)
Date: 01/24/05 

Date: Mon, 24 Jan 2005 09:00:37 GMT

G Patel wrote:
>
> I've been looking at some code for string functions (certain
> implementation of them) and the non modified
> string is usually declared as a const char *s in the parameter list.

A const char *s in the parameter list means that you should
expect the function not to change the string that s points to,
even though the function still could do that
by casting away the const qualifier.

char *str_cpy(char *s1, const char *s2)
{
    char *const p1 = s1;
    
    do {
        *s1 = *s2++;
    } while (*s1++ != '\0');
    return p1;
} 

-- 
pete

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