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Problem with try/catch

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Mahith Madhana Kumar
Mahith Madhana Kumar el 1 de Mzo. de 2021
Comentada: Mahith Madhana Kumar el 1 de Mzo. de 2021
Hi all,
I am experiencing a problem with the try/catch function. When I run the below script:
x=1:1:10;
for i=1:length(x)
try
if (x(i)==5)
disp('Success');
end
catch
disp('Dot index error');
continue
end
end
I am only getting a single output corresponding to the part when x(i)==5. Its not displaying the "Dot index error" for other values. I am not sure where I am doing wrong.
I looked into this similar post - https://www.mathworks.com/matlabcentral/answers/108074-try-catch-problems-with-matlab-2013 but that didnt have any follow up answers.
Thank you your help.
  2 comentarios
Stephen23
Stephen23 el 1 de Mzo. de 2021
"Its not displaying the "Dot index error" for other values."
I don't see any reason why it should: nothing in your code would obviously throw an error.
"I am not sure where I am doing wrong."
You are not doing anything wrong: nothing wrong means no error, which means no catch execution.
If no error occurs in your code, what error do you expect try to detect?
Mahith Madhana Kumar
Mahith Madhana Kumar el 1 de Mzo. de 2021
Oh yea. That makes sense. I was thinking the catch statement would be executed just like the else part of an if statement - my wrong. Thank you.

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KALYAN ACHARJYA
KALYAN ACHARJYA el 1 de Mzo. de 2021
Editada: KALYAN ACHARJYA el 1 de Mzo. de 2021
Have you read the document of try catch Doc fucntion?
If any statement in a try block generates an error, program control goes immediately to the catch block, which contains your error handling statements.
x=5;
try
if x==5
kkdisp('Success');% Error undefined fucntion kkdisp
end
catch
disp('Dot index error');
end
What are you trying to do?
  4 comentarios
Mahith Madhana Kumar
Mahith Madhana Kumar el 1 de Mzo. de 2021
Editada: Mahith Madhana Kumar el 1 de Mzo. de 2021
Can we achieve the same output using try/catch function?
KALYAN ACHARJYA
KALYAN ACHARJYA el 1 de Mzo. de 2021
It can be done anyway, its all about "Jugaad", is there any sense? The purpose of the function "Execute statements and catch resulting errors" (Error Handiling)
x=1:10;
for i=1:length(x)
try
if x(i)~=5
% Any Error syantax
HelloErrorHere
disp('Success');
else
disp('Success');
end
catch
disp('Dot index error');
end
end
Result:
Dot index error
Dot index error
Dot index error
Dot index error
Success
Dot index error
Dot index error
Dot index error
Dot index error
Dot index error
>>

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Más respuestas (1)

Mahith Madhana Kumar
Mahith Madhana Kumar el 1 de Mzo. de 2021
Thank you for the help.

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