std::queue<T,Container>:: front

From cppreference.com
reference front ( ) ;
const_reference front ( ) const ;

Returns reference to the first element in the queue. This element will be the first element to be removed on a call to pop() . Effectively calls c. front ( ) .

Parameters

(none)

Return value

Reference to the first element.

Complexity

Constant.

See also

access the last element
(public member function)
removes the first element
(public member function)