limit time with tic toc

The program will has 5 different levels of difficulties which correspond to a number of seconds the use has to enter an answer. how i do that with tic toc function?

X=floor(10*rand(1));
Y=floor(10*rand(1));
format short
formatSpec='Vad blir: %2f x %4f \n' ;
tic

fprintf(formatSpec,X,Y)
riktigt_svar=X*Y;
Ditt_Svar=input('Svar:');
t=toc
pause(0.5);

if Ditt_Svar == riktigt_svar
   msgbox('Right answer')
else 
    if Ditt_Svar ~= riktigt_svar
          errordlg(['Right answer is',num2str(riktigt_svar)],'Error')
    end 
end

[Vimal Rathod]

Could you explain more clearly on how you want to use tic toc function, because your code doesn't show any use of it.

[elo]

I want to make the person who using the program, enter an answer on a limit time. EX, first level the answr will be in 20s, second level 15s....

But a do not know how i do that/ or to use tic toc.

Answer 1

[Ameer Hamza]

input() is a blocking function, and there is no good way to timeout on it in MATLAB. The only alternative is to use inputdlg() and use a timer to close it after a specific number of seconds. See the answer to this question: https://www.mathworks.com/matlabcentral/answers/96229-how-can-i-have-a-dialog-box-or-user-prompt-with-a-time-out-period

Here is a short version of the code on that question

f1 = findall(groot, 'type', 'figure');
t = timer('TimerFcn', {@closeit f1}, 'StartDelay', 3);
start(t);

value = inputdlg('myPrompt', 'myTitle');
value = str2double(value{1});

function closeit(obj, ~, f1)
    f2 = findall(0, 'Type', 'figure');
    fnew = setdiff(f2, f1);
    if ishandle(fnew)
        close(fnew);
    end
    stop(obj)
    delete(obj);
end