A question regarding char*&

[LarryChen]

Here is the code,

void foo(char*& s)
{
	for(int i=0;i<10;i++)
		*s++ = '0'+i;

	*s = '\0';
}

int main()
{
    char s[100];
    foo(s);

    return 0;
}

It won't compile and there is a compiler error "cannot convert parameter 1 from 'char [100]' to 'char *&' ". Why?