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    getenv

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    <metanoindex/>

     
    C
     
    Das Programm unterstützt Versorgungsunternehmen
    Beendigung des Programms
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    Program termination
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    abort
    exit
    quick_exit(C++11)
    _Exit(C++11)
    Die Kommunikation mit der Umwelt
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    Communicating with the environment
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    Signale
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    Signals
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    Signal-Typen
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    Signal types
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    SIGABRT
    SIGFPE
    SIGILL
    SIGINT
    SIGSEGV
    SIGTERM
    Nicht-lokale Sprünge
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    Non-local jumps
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    setjmp
    longjmp
    Types
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    Types
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    jmp_buf
     
    <tbody> </tbody>
    definiert in Header <stdlib.h>
    const char *getenv( const char *env_var );
    Sucht nach einem Umgebungsvariable mit dem Namen env_var im Host-Umfeld angegebenen Liste und kehrt damit verbundenen Informationen. Der Satz von Umgebungsvariablen und Methoden der Veränderung es sind die Implementierung definiert .
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    Searches for an environmental variable with name env_var in the host-specified environment list and returns information associated with it. The set of environmental variables and methods of altering it are implementation-defined.
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    Parameter

    env_var -
    null-terminierte Zeichenkette, die den Namen der Umgebungsvariablen zu suchen
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    null-terminated character string identifying the name of the environmental variable to look for
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    Rückgabewert

    Zeichenkette identifiziert den Wert der Umgebungsvariable oder NULL wenn diese Variable nicht gefunden wird .
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    character string identifying the value of the environmental variable or NULL if such variable is not found.
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    Beispiel

    This section is incomplete
    Reason: no example

    Siehe auch

    C++ documentation for getenv