Thread: Replace # into backspace

Hi im writing program from codewars site.
The aim of this program is to replace # into \b. After compiling in Visual Studio I am getting proper result but codewars site give me wrong result.

Code:

char *strclr(const char *s)
{
	char *r = (char*)malloc(sizeof(char)*strlen(s) + 1);
	memset(r, '\0', strlen(s) + 1);
	for (; *s!='\0'; s++)
	{
		if (*s == '#')
			strncat(r, "\b", 1);
		else
			strncat(r, s, 1);
	}
	return r;
}

I think that I could make one change in this program if *s=='#' decrease --r but it not work properly. Can you help me with this