std::set::size

<metanoindex/>

 

C++

Suporte ao Compilador

Freestanding and hosted

Linguagem

Headers da Biblioteca Standard

Requerimentos nomeados

Feature test macros (C++20)

Biblioteca de suporte de língua

Biblioteca de conceitos (C++20)

Biblioteca de diagnósticos

Biblioteca de utilitários em geral

Biblioteca de strings

Biblioteca de containers

Ranges library (C++20)

Biblioteca de iteradores

Biblioteca de algorítmos

Biblioteca numérica

Biblioteca de localizações

Biblioteca de input/output

Biblioteca de sistema de arquivo (C++17)

Biblioteca de expressões regulares (C++11)

Biblioteca de operações atômicas (C++11)

Biblioteca de suporte de thread (C++11)

Especificações Técnicas

Índice de symbolos

Bibliotecas externas

 

Recipientes biblioteca

array (C++11)

vector

deque

forward_list (C++11)

list

set

multiset

map

multimap

unordered_set (C++11)

unordered_multiset (C++11)

unordered_map (C++11)

unordered_multimap (C++11)

stack

queue

priority_queue

 

std::set

Funções de membro Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

set::set

set::~set

set::operator=

set::get_allocator

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

set::begin set::cbegin (C++11)

set::end set::cend (C++11)

set::rbegin set::crbegin (C++11)

set::rend set::crend (C++11)

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

set::empty

set::size

set::max_size

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

set::clear

set::insert

set::emplace (C++11)

set::emplace_hint (C++11)

set::erase

set::swap

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

set::count

set::find

set::equal_range

set::lower_bound

set::upper_bound

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

set::key_comp

set::value_comp

 

<tbody> </tbody>

size_type size() const;

Returns the number of elements in the container, i.e. std::distance(begin(), end()).

Parâmetros

(Nenhum)

Original:

(none)

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

Valor de retorno

o número de elementos no recipiente

Original:

the number of elements in the container

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

Exceções

noexcept specification:  

<tbody> </tbody>

noexcept

  (desde C++11)

Complexidade

Constant

Exemplo

The following code uses size to display the number of elements in a std::set<int>:

#include <set>
#include <iostream>
 
int main()
{
    std::set<int> nums {1, 3, 5, 7};
 
    std::cout << "nums contains " << nums.size() << " elements.\n";
}

Saída:

nums contains 4 elements.

Veja também

empty	verifica se o recipiente estiver vazio Original: checks whether the container is empty The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função pública membro)
max_size	retorna o número máximo possível de elementos Original: returns the maximum possible number of elements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função pública membro)