If Else Statement in a Switch function

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Muhammad Aiman Al-Amin
编辑： the cyclist 2023-4-10
As the title stated, I want to make a program where I can input if else statement into a switch case, however most source I see on the forum just straight up put the condition into the case without if else statement, which prevent from getting the code that I wanted. Is there a way to make it work? Or it is impossible to put the two function together without removing the if else statement?
Thank you in advance

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回答（2 个）

the cyclist
the cyclist 2023-4-10
You didn't end the if clause that is inside the first case statement.
Bhanu Prakash
Bhanu Prakash 2023-4-10
Hi Aiman,
As per my understanding, you want to use an "if-else" statement in "case" statement.
The answer to your question is "Yes". You can use "if-else" statement in a "case" statement. But the error that you got is due to the usage of incorrect syntax in the "case" statement.
I have attached the edited part of the code, for your reference:
switch n
case 1
if gread <70
disp('Your glucose level is too low.');
elseif (70 <=gread) && (gread <=100)
disp('Congratulations, your glucose level is normal.');
elseif (101 <=gread) && (gread <=125)
disp('You are diagnosed as pre-diabetes');
else
disp('You are diagnosed as diabetes');
end
case 2
if gread < 70
disp('Your glucose level is too low.');
elseif (70 <=gread) && (gread <=100)
disp('Congratulations, your glucose level is normal.');
elseif (101 <=gread) && (gread <=125)
disp('You are diagnosed as pre-diabetes');
else
disp('You are diagnosed as diabetes');
end
end
You can refer to the documentation of "case" statement, for more info:
Execute one of several groups of statements - MATLAB switch case otherwise - MathWorks India
Hope this answer helps you.
Thanks,
Bhanu Prakash.
  2 个评论
Muhammad Aiman Al-Amin
Muhammad Aiman Al-Amin 2023-4-10
Thank you very much for the asnwer!
It seems that I need to put 'end' for each if else statement.
May I ask, in this case, why is there no need to put 'otherwise' case in the switch function? Is the otherwise statement optional in switch function?
the cyclist
the cyclist 2023-4-10
编辑：the cyclist 2023-4-10
Yes, the otherwise block is optional. (This is mentioned in the documentation.)
I think it is considered best practice to include one, though, to guard against the possibility of inadvertentlyl not covering all possible cases.

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