MATLAB: Respond equal a character

answer

hi all,

I did it,

accept=input('do you want to play again, Yes(Y,y), No(N,n); \n','s');
while accept~='Y'||accept~='y'||accept~='N'||accept~='n'
    
accept=input('do you want to play again, Yes(Y,y), No(N,n); \n','s');
end

and it is not working. I couldn't save quastion of while loop can anyone help me ?

Best Answer

Use strcmp() or strcmpi() or ismember()

Using ~= together with "||" will fail if the user enters more than one character.

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MATLAB: Regexp : get all the match for one expression

It's not possible to do what you want with just a regular expression. A character can only be part of one match, so once you've captured 'bigFamily_' you can't capture it again as part of bigFamily_middleFamily_ within the same regular expression.

What I would do is just capture each *family part and rebuild all the possible combinations:

var =  'bigFamily_middleFamily_littleFamily_childName';
subfamilies = regexp(var, '[a-zA-Z0-9]+_', 'match');
combinations = num2cell(logical(tril(ones(numel(subfamilies)))), 2);
families = cellfun(@(c) strcat(subfamilies{c}), combinations, 'UniformOutput', false)

Or if you don't want the trailing '_':

var =  'bigFamily_middleFamily_littleFamily_childName';
subfamilies = regexp(var, '[a-zA-Z0-9]+(?=_)', 'match');
combinations = num2cell(logical(tril(ones(numel(subfamilies)))), 2);
families = cellfun(@(c) strjoin(subfamilies(c), '_'), combinations, 'UniformOutput', false)

MATLAB: Does anyone know why the 2nd conditional statement is being ignored in this while loop

Suppose i enter Nm in command window then units will be

units
units = 
  1×4 string array
    "Nm"    ""    ""    ""

if you try the access the first letter

units(1)
ans = 
    "Nm"

you have the complete word the user enters and not a single character

to access first index

units{1}(1)
ans =
    'N'

Now for the while loop, it keeps runing untill it receives false. so if user inputs N, so

    'N' ~= 'N' || 'N' ~= 'n'

this will give you true and while loop will keep runing. you need a condition such that if any of them is true you get false and if both are false you get true

Best Answer

Related Solutions

MATLAB: Regexp : get all the match for one expression

MATLAB: Does anyone know why the 2nd conditional statement is being ignored in this while loop

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