Using a text file as a function parameter

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Matheus
Matheus 2017-11-18
评论： Matheus 2017-11-18
I am trying to create a function where the inputs are text files. For some reason, the program is not reading the files, I am getting the message "Reference to a cleared variable input A".
function [result] = funtion_name(InputA,InputB,InputC);
clear all
VariableA= dlmread(InputA);
VariableB= dlmread(InputB);
VariableC=fileread(InputC);
%Do something
end
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Stephen23
Stephen23 2017-11-18
clear all
clears all variables. At the start of any function it is totally counter-productive cargo-cult programing:
https://en.wikipedia.org/wiki/Cargo_cult_programming

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回答（1 个）

Walter Roberson
Walter Roberson 2017-11-18
The "clear all" is clearing the input parameters.
You should never use "clear all" inside a function. If you use it at all inside a script, it should be reserved for a script that does nothing but reset the state of MATLAB, to be used only under circumstances where you might otherwise close MATLAB and restart it.

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