How to save results of fonction as file (*.txt)?

Question

How to create a fonction that save a result of an other fonction as file (*.txt)

Answer 1

1. Call the function, whose value you wanted to store.
2. Store the value and convert to string in case it's not already a string.
3. With basic file handling write the previous string to a text file.
4. Put 1, 2 and 3 to a function, which you wanted to write to the text file.