main(){?printf("%d \n ",fun(9));}int fun ( int x ){?int p;??if ( x == 0 || x == 1 )?{??return ( 3 );?}?else ?{??p = x - fun( x - 2 );?}}運(yùn)行結(jié)果為3!請(qǐng)大神破解!謝謝!