RF>wchar *s; // эта строка
RF>wchar  c1, c2;
RF>int  n;

RF>n = wstrlen(s);
RF>for (i=0; i<n/2; i++)
RF>{
RF>    c1 = s[i];
RF>    c2 = s[n-i-1];
RF>    s[i] = c2;
RF>    s[n-i-1] = c1;
RF>}
RF>