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Full Discussion: Segmentation fault in C
Top Forums Programming Segmentation fault in C Post 302509322 by Corona688 on Wednesday 30th of March 2011 02:02:05 PM
Old 03-30-2011
Quote:
Originally Posted by omega666
nvm i fixed it all i had to do is

if (client_names[i]== username) return(1);
Strings don't work that way. It's not crashing anymore, but it's not actually doing what you wanted either. It's just comparing the pointer, not the contents. Try this:

Code:
int main(void)
{
    char *str1="aaaa";
    char str2[]="aaaa";
    char *str3=str1;
    if(str1 == str2) printf("str1 == str2\n");
    if(str1 == str3) printf("str1 == str3\n");
}

It won't print the first one because str1 and str2 aren't equal. They point to different areas of memory. It will print the second one because str1 and str3 do point to the same area of memory.

As is often the case it's not something wrong with your function as much as something wrong with the data you fed into it. Something's wrong with the variables you passed into the function. Since you, as usual, didn't post the complete code, I'd need psychic powers to help you.

Please post your complete code!

Last edited by Corona688; 03-30-2011 at 03:11 PM..
 

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STRCSPN(3)								 1								STRCSPN(3)

strcspn - Find length of initial segment not matching mask

SYNOPSIS
int strcspn (string $str1, string $str2, [int $start], [int $length]) DESCRIPTION
Returns the length of the initial segment of $str1 which does not contain any of the characters in $str2. PARAMETERS
o $str1 - The first string. o $str2 - The second string. o $start - The start position of the string to examine. o $length - The length of the string to examine. RETURN VALUES
Returns the length of the segment as an integer. EXAMPLES
Example #1 strcspn(3) example <?php $a = strcspn('abcd', 'apple'); $b = strcspn('abcd', 'banana'); $c = strcspn('hello', 'l'); $d = strcspn('hello', 'world'); var_dump($a); var_dump($b); var_dump($c); var_dump($d); ?> The above example will output: int(0) int(0) int(2) int(2) NOTES
Note This function is binary-safe. SEE ALSO
strspn(3). PHP Documentation Group STRCSPN(3)
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