Range-based for loop (desde C++11)

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[editar] Sintaxe

[editar] Explicação

• (__range) e (__range + __bound) para tipos de matriz, onde __bound é a matriz vinculado

  Original:

  (__range) and (__range + __bound) for array types, where __bound is the array bound

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• begin(__range) e end(__range), que são encontrados com base no argumento de pesquisa-regras. Para contêineres padrão isso acaba sendo equivalente a std::begin e std::end que por sua vez exige __range.begin() e __range.end().

  Original:

  begin(__range) and end(__range), which are found based on argument-lookup rules. For standard containers this ends up being equivalent to std::begin and std::end which in turn calls __range.begin() and __range.end().

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[editar] Palavras-chave

for

[editar] Exemplo

#include <iostream>
#include <vector>
 
int main() 
{
    std::vector<int> v = {0, 1, 2, 3, 4, 5};
 
    for (int &i : v) // access by reference (const allowed)
        std::cout << i << ' ';
 
    std::cout << '\n';
 
    for (auto i : v) // compiler uses type inference to determine the right type
        std::cout << i << ' ';
 
    std::cout << '\n';
 
    for (int i : v) // access by value as well
        std::cout << i << ' ';
 
    std::cout << '\n';
}

0 1 2 3 4 5
0 1 2 3 4 5
0 1 2 3 4 5