How to save data in a file without deleting old data

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

Answer 1

[Ameer Hamza]

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.