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input a 1*3 vector

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Khalid AL Harthi
Khalid AL Harthi 2015-11-11
编辑： Thorsten 2015-11-11
how can I make the user inputs an array of 1*3 dimensions for example x=input('your guess') x= [# # #]

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回答（3 个）

Stalin Samuel
Stalin Samuel 2015-11-11
Walter Roberson
Walter Roberson 2015-11-11
while true
xs = input('enter your guess (a list of three numbers)', 's');
xs = regexprep(xs, '^\[(.*)\]', '$1');
s = regexp(xs, '(\s|,)+', 'split');
if length(s) ~= 3
warning('Wrong number of entries, need 3');
continue;
end
x = str2double(s);
if any(isnan(x))
warning('Something was not a number!');
continue;
end
break;
end
Thorsten
Thorsten 2015-11-11
编辑：Thorsten 2015-11-11
Use brackets when entering the input
>> x=input('your guess')
your guess[1 2 3]
x =
1 2 3

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