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

This page has been machine-translated from the English version of the wiki using Google Translate. The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here. Click here for the English version of this page

[Bearbeiten] Syntax

[Bearbeiten] Erklärung

• (__range) und (__range + __bound) für Array-Typen, wo __bound ist das Array gebunden

  Original:

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

  The text has been machine-translated via Google Translate.
  You can help to correct and verify the translation. Click here for instructions.
• begin(__range) und end(__range), die basierend auf Argument-Lookup Regeln gefunden. Für Standard-Containern endet es gleichwertig std::begin und std::end was wiederum Anrufe __range.begin() und __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().

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

[Bearbeiten] Keywords

for

[Bearbeiten] Beispiel

#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