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      std::getenv

      De cppreference.com
      < cpp‎ | utility‎ | program
       
      C++
       
      Bibliothèque d'utilitaires
       
      Services d'appui aux programmes
      La fin du programme
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      Program termination
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      abort
      exit
      quick_exit (C++11)
      _Exit (C++11)
      Communiquer avec l'environnement
      Original:
      Communicating with the environment
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      getenv
      Signaux
      Original:
      Signals
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      Types de signaux
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      Signal types
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      SIGABRT
      SIGFPE
      SIGILL
      SIGINT
      SIGSEGV
      SIGTERM
      Non-locales sauts
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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
       
      Déclaré dans l'en-tête <cstdlib>
      constchar*getenv(constchar*env_var );
      Recherche une variable d'environnement avec env_var nom de l'hôte spécifié par la liste environnement et renvoie des informations qui lui sont associés. L'ensemble des variables d'environnement et les méthodes de l'altérer sont définis par l'implémentation .
      Original:
      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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      Sommaire

      [modifier]Paramètres

      env_var -
      chaîne de caractères terminée par NULL identifier le nom de la variable d'environnement qu'il faut chercher
      Original:
      null-terminated character string identifying the name of the environmental variable to look for
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      [modifier]Retourne la valeur

      Chaîne de caractères identifiant la valeur de la variable d'environnement ou NULL si la variable n'est pas trouvée .
      Original:
      Character string identifying the value of the environmental variable or NULL if such variable is not found.
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      [modifier]Exemple

      #include <iostream>#include <cstdlib>   int main(int argc, char*argv[]){std::cout<<"Your PATH is: "<< std::getenv("PATH")<<std::endl;}

      Résultat possible : 

      Your PATH is: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

      [modifier]Voir aussi

      C documentation for getenv
      Récupérée de « https://fr.cppreference.com/mwiki/index.php?title=cpp/utility/program/getenv&oldid=49967 »
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