Error with if elseif statements
9 ビュー (過去 30 日間)
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My program is set up to ask the user for an input variable, as follows:
GOAL=input('WHAT IS YOUR GOAL?(FIT=FITNESS, FB=FAT BURN, N=NEITHER): ','s');
Then, I wrote an if, elseif statement written as:
if GOAL==('FIT')
I wrote the same thing for if GOAL==('FB') and if GOAL==('N'), and each is followed by functions to be executed for whichever the user chooses.
The error message that I am getting says:
Error using == Matrix dimensions must agree.
Am I approaching it wrong? Anything helps, thanks.
1 件のコメント
Vaibhav Sharma
2018 年 2 月 18 日
I get the exact message for a different function of question answering
採用された回答
bio lim
2016 年 11 月 30 日
I suggest you to use strcmp
GOAL=input('WHAT IS YOUR GOAL?(FIT=FITNESS, FB=FAT BURN, N=NEITHER):\n ','s');
if strcmp(GOAL, 'FITNESS')
sprintf('GOOD')
elseif strcmp(GOAL, 'FB')
sprintf('ALSO GOOD')
else strcmp(GOAL, 'N')
sprintf('WHAT YOU SEEK HUMAN')
end
2 件のコメント
その他の回答 (1 件)
Daniel kiracofe
2016 年 11 月 30 日
In matlab, strings are arrays of characters. Two strings with different lengths have different array dimensions. e.g.
'dog' is a 3x1 character array.
'bird' is a 4x1 character array
So something like this
if ('dog' == 'bird')
will give an error because you are trying to compare a 3x1 array with a 4x1 array, and to compare arrays they must have the same length.
try the strcmp() function instead. i.e
if strcmp(GOAL, 'fit')
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