How to save data in a file without deleting old data

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Hello,
I need to write a function that takes multiple inputs and then save the result in another file (let's call it savefile.M). However, I want to use the same function for another set of data and save the result in savefile.M without deleting the results obtained previously.
Thank you

Answers (1)

Ameer Hamza
Ameer Hamza on 29 Mar 2020
If it is a text file than you can open it is append mode
f = fopen('test.txt', 'a');
fprintf(f, 'This is first line.\n');
fclose(f);
f = fopen('test.txt', 'a');
fprintf(f, 'This is second line.\n');
fclose(f);
It will write new data under the current data.

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