Nezadali ste premennú a
"; $processadd=false; } if (!$premennab) { echo "Nezadali ste premennú b
"; $processadd=false; } endif; if ($processadd): $premennac = $premennaa + $premennab; echo "Výsledok: A + B ="; echo "$premennaa"; echo "+"; echo "$premennab ="; echo "$premennac"; else: ?> endif ?>