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Allgemeine Themen
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General topics
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Flusskontrolle
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Flow control
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Bedingte Ausführung Aussagen
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Conditional execution statements
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Iterationsanweisungen
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Iteration statements
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Gehe Aussagen
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Jump statements
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Funktionen
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Functions
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Funktion Erklärung
Lambda-Funktion Erklärung
Funktions-Template
inline-Spezifizierer
Exception-Spezifikationen (veraltet)
noexcept Spezifizierer (C++11)
Ausnahmen
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Exceptions
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Namespaces
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Namespaces
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Types
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Types
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decltype specifier (C++11)
Specifiers
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Specifiers
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cv Planer
Lagerdauer Planer
constexpr Spezifizierer (C++11)
auto Spezifizierer (C++11)
alignas Spezifizierer (C++11)
Initialisierung
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Initialization
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Literale
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Literals
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Expressions
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Expressions
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alternative Darstellungen
Utilities
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Utilities
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Types
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Types
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typedef declaration
Typ Aliasdeklaration (C++11)
Attribute (C++11)
Wirft
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Casts
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impliziten Konvertierungen
const_cast conversion
static_cast conversion
dynamic_cast conversion
reinterpret_cast conversion
C-Stil und funktionale Besetzung
Speicherzuweisung
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Memory allocation
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Classes
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Classes
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Class-spezifische Funktion Eigenschaften
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Class-specific function properties
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explizit (C++11)
statisch
Besondere Member-Funktionen
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Special member functions
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Templates
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Templates
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Klassen-Template
Funktions-Template
Template-Spezialisierung
Parameter Packs (C++11)
Verschiedenes
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Miscellaneous
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Inline Montage
 
 
Inklusive anderen Quelldatei in aktuellen Quelldatei an der Linie sofort nach der Richtlinie .
Original:
Includes other source file into current source file at the line immediately after the directive .
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Inhaltsverzeichnis

[Bearbeiten] Syntax

#line lineno (1)
#line lineno "filename" (2)

[Bearbeiten] Erklärung

Ändert die aktuelle Präprozessor Zeilennummer lineno. Erweiterungen des Makros __LINE__ über diesen Punkt hinaus wird lineno plus der Anzahl der tatsächlichen Zeilen Quelltext gestoßen, da zu erweitern .
Original:
Changes the current preprocessor line number to lineno. Expansions of the macro __LINE__ beyond this point will expand to lineno plus the number of actual source code lines encountered since.
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2)
Auch ändert die aktuelle Präprozessor Dateinamen filename. Erweiterungen des Makros __FILE__ von diesem Punkt produziert filename .
Original:
Also changes the current preprocessor file name to filename. Expansions of the macro __FILE__ from this point will produce filename.
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Jede Vorverarbeitung Token (Makro-Konstanten oder Ausdrücke) werden als Argumente an #line zulässig, solange sie zu erweitern, um eine gültige Dezimalzahl gegebenenfalls nach eine gültige Zeichenkette .
Original:
Any preprocessing tokens (macro constants or expressions) are permitted as arguments to #line as long as they expand to a valid decimal integer optionally following a valid character string.
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[Bearbeiten] Notes

Diese Richtlinie wird durch Verwendung einige automatische Codegenerierung Werkzeuge, die C + +-Quellcode-Dateien erzeugen aus einer Datei in einer anderen Sprache geschrieben. In diesem Fall kann #line Richtlinien eingefügt werden die erzeugten C + +-Datei verweisen Zeilennummern und den Dateinamen des ursprünglichen (human-editierbar) Quelldatei.
Original:
This directive is used by some automatic code generation tools which produce C++ source files from a file written in another language. In that case, #line directives may be inserted in the generated C++ file referencing line numbers and the file name of the original (human-editable) source file.
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[Bearbeiten] Beispiel

#include <cassert>
#define FNAME "test.cc"
int main()
{
#line 777 FNAME
        assert(2+2 == 5);
}

Output:

test: test.cc:777: int main(): Assertion `2+2 == 5' failed.