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std::vector::size

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< cpp‎ | container‎ | vector

 
 
 
std::vector
Funções de membro
Original:
Member functions
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vector::vector
vector::~vector
vector::operator=
vector::assign
vector::get_allocator
acesso. Elemento
Original:
Element access
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vector::at
vector::operator[]
vector::front
vector::back
vector::data(C++11)
Iteradores
Original:
Iterators
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vector::begin
vector::cbegin

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

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

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

(C++11)
Capacidade
Original:
Capacity
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vector::empty
vector::size
vector::max_size
vector::reserve
vector::capacity
vector::shrink_to_fit(C++11)
Modificadores
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Modifiers
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vector::clear
vector::insert
vector::emplace(C++11)
vector::erase
vector::push_back
vector::emplace_back(C++11)
vector::pop_back
vector::resize
vector::swap
 
size_type size() const;

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

Índice

[editar] Parâmetros

(Nenhum)
Original:
(none)
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[editar] Valor de retorno

o número de elementos no recipiente
Original:
the number of elements in the container
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[editar] Exceções

noexcept specification:  
noexcept
  (a partir do C++ 11)

[editar] Complexidade

Constant

[editar] Exemplo

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

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

Output:

nums contains 4 elements.

[editar] Veja também

retorna o número de elementos que podem ser mantidos em armazenamento atualmente alocado
Original:
returns the number of elements that can be held in currently allocated storage
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(função pública membro) [edit]
verifica se o recipiente estiver vazio
Original:
checks whether the container is empty
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(função pública membro) [edit]
retorna o número máximo possível de elementos
Original:
returns the maximum possible number of elements
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(função pública membro) [edit]
changes the number of elements stored
(função pública membro) [edit]