What is the use of/for...

[NAL123]

Question (1): What is the use of the Enter key on the keyboard?

Question (2): What is the use for the Enter key on the keyboard?

Answer: The Enter key is primarily used for executing commands, submitting forms etc.

Which is correct, of or for?

 

[jutfrank]

of

Change the word 'use' to 'function' and then the second 'the' to 'a'.