I keep getting an error about my inputs in a function I am trying to create?

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Michael 2013-10-23

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/91163-i-keep-getting-an-error-about-my-inputs-in-a-function-i-am-trying-to-create

评论： David Sanchez 2013-10-23

function output = dim_check(dimension,name)
% DIM_CHECK confirms if the user entered a valid number for a dimension
% Input: A scalar value for dimension, and a string that stands for what 
% the value (dimension) represents
% Output: The dimension
% Processing: The function will accept the dimension and set it equal to
% the output. It will test to see if it is <= 0. If it is <= 0, then the
% function will use the while function as a loop to ask the user to input
% another dimension. A message will be displayed using the string inputed.
% The statement will tell the user that dimension type (found from the
% string) they inputed cannot be equal to 0.
output = dimension;
'name' = name
while (output <=0)
  fprintf('The %s cannot be less than or equal to 0.\n',name)
  output = input('Enter a value for your dimension. ');
end
end

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Answer 1

David Sanchez 2013-10-23

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https://ww2.mathworks.cn/matlabcentral/answers/91163-i-keep-getting-an-error-about-my-inputs-in-a-function-i-am-trying-to-create#answer_100569

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function output = dim_check(dimension,name)
output = dimension; 
'name' = name % ---------> this is the cause of your error. It has no sense. If you comment out this line (or delete it), your function will work
while (output <=0) 
  fprintf('The %s cannot be less than or equal to 0.\n',name) 
  output = input('Enter a value for your dimension. '); 
end 
end

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Michael 2013-10-23

function [output] = dim_check(dimension,name)

% DIM_CHECK confirms if the user entered a valid number for a dimension % Input: A scalar value for dimension, and a string that stands for what % the value (dimension) represents % Output: The dimension % Processing: The function will accept the dimension and set it equal to % the output. It will test to see if it is <= 0. If it is <= 0, then the % function will use the while function as a loop to ask the user to input % another dimension. A message will be displayed using the string inputed. % The statement will tell the user that dimension type (found from the % string) they inputed cannot be equal to 0.

output = dimension;

while (output <=0) fprintf('The %s cannot be less than or equal to 0.\n',name) display('Enter a value that is greater than 0. ') output = input('Enter a value for your dimension. '); end end

This is what I have now and it sill gives me the same error mesage

David Sanchez 2013-10-23