can anyone help me rewrite the function i wrote below using only points and pointer increment/decrement? I dont have much experience with pointer so I dont know what to do.

void reverse(char * s)
{
    int i, l = strlen(s);
    char c;
    for(i = 0; i < (l >> 1); i++)
    {
       c = s[i];
       s[i] = s[l - i - 1];
       s[l - i - 1] = c;
    }
}

do not use pointer arithmetic or array notation. any help or hint on how to rewrite the function above is appriciated. Thanks!