function y = zaokrozi(x,k,nacin)

if nargin < 3
    nacin = "";
end

if nacin == "navzgor"
    y = ceil(x * 10^k)/10^k;
elseif nacin == "navzdol"
    y = floor(x * 10^k)/10^k;
else
%     y = round(x * 10^k)/10^k;
    y = round(x,k);
end

end