Write a sentence in multiple files

2021 8 8
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更新时间：2021 8 8
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Hi,
I have a many '.txt' files in a folder.
a.txt, b.txt, c.txt ......
Now I want to open each one of them one by one and print the following sentence in the 5th line from the beginning of each one them including the file name.
The sentence is :
a.txt > "I am in a file"
b.txt > "I am in b file"
these line should be printed on the 5th line from the file starting.
Can you please tell me the procedure

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Image Analyst
Image Analyst 2021-8-8

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Hint: FAQ: https://matlab.fandom.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F
How do I get help on homework questions on MATLAB Answers? - MATLAB Answers - MATLAB Central
And this snippet:
% Open the file for reading in text mode.
fileID = fopen(fullFileName, 'rt');
% Read the first line of the file.
textLine = fgetl(fileID);
lineCounter = 1;
while ischar(textLine)
% Print out what line we're operating on.
fprintf('%s\n', textLine);
% Read the next line.
textLine = fgetl(fileID);
lineCounter = lineCounter + 1;
end
% All done reading all lines, so close the file.
fclose(fileID);
Good luck.

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JAMMI ASHOK
JAMMI ASHOK 2021-8-8
Thank you. By the way, it's not a homwwork question.
I am trying to understand a code and see which functions are getting called.
For example:
getcl.py ->
def getcoord():
....................
....................
return
similarly I have 256 files in a folder. I don't know which sequence they are getting called.
So, I want to read each file as text - so that I can print at the 5 the line from the starting because generally
the function definitions will be starting at 4 th line.
print("I am in getcl")
So, If this statement gets printed in the 5th line, this will get printed on my console when program is running.
Now the program looks like:
getcl.py ->
def getcoord():
.print("I am in getcl")
...................
....................
return
I don't need the function name, just file name is sufficient.
I hope you understand
Image Analyst
Image Analyst 2021-8-8
To find out what functions a file requires, you can do
[requiredFileList, toolboxList] = matlab.codetools.requiredFilesAndProducts(fullFileName);
Attached is my function wrapper for it.

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