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How to change the content of file?

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Ivan Mich
Ivan Mich 2020-5-21
关闭： MATLAB Answer Bot 2021-8-20
Hello,
I I would like to change the content of a .txt file via a for loop, if it is possible.
I would like thw first value to be 10 and the last 250, and I want the content to be changed per 10 (I mean for k=10:10:250).
I am importing the .txt file.
How could I do that?
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Walter Roberson
Walter Roberson 2020-5-22
save -ascii puts in a line of comments
Bjorn Gustavsson
Bjorn Gustavsson 2020-5-22
@Walter: What version of matlab started with that?

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回答（1 个）

Walter Roberson
Walter Roberson 2020-5-22
filename = 'Document2.txt';
while true
Val = load(filename) + 10;
if Val > 250; break; end
fid = fopen(filename, 'wt') ;
fprintf(fid, '%g\n', Val) ;
fclose(fid) ;
end
Not the way that I would implement myself, but for some reason it is important to you to work this way.

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