What is Identifier?

Question

int num = 5;

is 5 a Identifier or not ?

Answer 1

"identifier" is the name by which you identify something.

in

int num = 5;

"num" is the identifier which is currently being used to identify a literal '5'.

Answer 2

Arsenic it's like variable, right?

Answer 3

Amirreza Hashemi "identifier" is a much wider term and is simply a name that is used to identify something, that name can be of a variable, constant, function, class, struct etc.

For example

int func ()
{
// do something
}

int main ()
{
func ();
}

Here "func" is an identifier which is identifying a function and not a variable.