Template

Question

the use of template makes program easier
and simple

Answer 1

Or, you can ask:
"What are the uses of templates?"
True enough, templates may be useless for you, but it has saved programmers much time by enabling us to write functions which can deal with generic data types instead of writing an overload for each different type.

Answer 2

Hatsy Rei
for making cookies too🍪😋
lol