What is the difference?

Question

what is the difference between this two options:

int a = get_rand_number()//it returns number

and

int a = get_rand_number//also returns number

Thanks for your help😄

Answer 1

If get_rand_number is declared a sa function,

get_rand_number would return a function pointer.
get_rand_number() would be a function call.

E.g.

void function() {
std::cout << "Function";
}

int main() {
void (*fptr)() = function;
fptr();
return 0;
}

Answer 2

I think there is a difference especially when using reference functions🤔