◐ Shell
clean mode source ↗

std::stack::top – cppreference.com

Aus cppreference.com

<metanoindex/>

<tbody> </tbody>

reference top();

const_reference top() const;

Gibt Bezugnahme auf das obere Element in dem Stapel. Dies ist die zuletzt gedrückt Element. Dieses Element wird auf der Aufruf pop() entfernt werden. Effektiv nennt c.back() .

Original:

Returns reference to the top element in the stack. This is the most recently pushed element. This element will be removed on a call to pop(). Effectively calls c.back().

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Parameter

(None)

Original:

(none)

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Rückgabewert

Bezugnahme auf das letzte Element

Original:

reference to the last element

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Komplexität

Constant

Original:

Constant

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Siehe auch

inserts element at the top
(öffentliche Elementfunktion) [edit]

entfernt das oberste Element

Original:

removes the top element

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.


(öffentliche Elementfunktion) [edit]

Beispiel

#include <stack>
#include <iostream>

int main()
{
    std::stack<int>   s;

    s.push( 2 );
    s.push( 6 );
    s.push( 51 );

    std::cout << s.size() << " elements on stack\n";
    std::cout << "Top element: "
	      << s.top()         // Leaves element on stack
	      << "\n";
    std::cout << s.size() << " elements on stack\n";
    s.pop();
    std::cout << s.size() << " elements on stack\n";
    std::cout << "Top element: " << s.top() << "\n";
  
    return 0;
}

Output: 

3 elements on stack
Top element: 51
3 elements on stack
2 elements on stack
Top element: 6