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      assert

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      < cpp‎ | error

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      C++
       
      Bibliothèque d'utilitaires
       
      Erreur de manipulation
      La gestion des exceptions
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      Exception handling
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      exception
      uncaught_exception
      exception_ptr (C++11)
      make_exception_ptr (C++11)
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      rethrow_exception (C++11)
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      rethrow_if_nested (C++11)
      Défaillances de gestion des exceptions
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      Exception handling failures
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      terminate
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      get_terminate (C++11)
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      Catégories d'exception
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      Exception categories
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      logic_error
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      Les codes d'erreur
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      Error codes
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      Les codes d'erreur
      errno
      Les assertions
      Original:
      Assertions
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      assert
      system_error installation
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      system_error facility
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      error_category (C++11)
      generic_category (C++11)
      system_category (C++11)
      error_condition (C++11)
      errc (C++11)
      error_code (C++11)
      system_error (C++11)
       
      Déclaré dans l'en-tête <cassert>
      #ifdef NDEBUG

      #define assert(condition) ((void)0)
      #else
      #define assert(condition) /*implementation defined*/

      #endif
      La définition de la macro assert dépend d'une autre macro, NDEBUG, qui n'est pas définie par la bibliothèque standard .
      Original:
      The definition of the macro assert depends on another macro, NDEBUG, which is not defined by the standard library.
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      Si NDEBUG est défini comme un nom de macro à l'endroit où le code source est inclus <cassert>, puis assert ne fait rien .
      Original:
      If NDEBUG is defined as a macro name at the point in the source code where <cassert> is included, then assert does nothing.
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      Si NDEBUG n'est pas défini, puis vérifie si son argument assert (qui doit être de type scalaire) égale à zéro. Si c'est le cas, assert sorties spécifiques à l'implémentation des informations de diagnostic sur la sortie d'erreur standard et appelle std::abort. L'information de diagnostic est nécessaire d'inclure le texte de expression, ainsi que les valeurs des macros standard __FILE__, __LINE__, et la variable standard __func__ .
      Original:
      If NDEBUG is not defined, then assert checks if its argument (which must have scalar type) compares equal to zero. If it does, assert outputs implementation-specific diagnostic information on the standard error output and calls std::abort. The diagnostic information is required to include the text of expression, as well as the values of the standard macros __FILE__, __LINE__, and the standard variable __func__.
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      Sommaire

      [modifier]Paramètres

      condition -
      expression de type scalaire
      Original:
      expression of scalar type
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      [modifier]Retourne la valeur

      (Aucun)
      Original:
      (none)
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      [modifier]Exemple

      #include <iostream>// uncomment to disable assert()// #define NDEBUG#include <cassert>   int main(){ assert(2+2==4);std::cout<<"Execution continues past the first assert\n"; assert(2+2==5);std::cout<<"Execution continues past the second assert\n";}

      Résultat : 

      Execution continues past the first assert test: test.cc:8: int main(): Assertion `2+2==5' failed. Aborted

      [modifier]Voir aussi

      l'affirmation statique
      effectue la compilation affirmation de vérifier (depuis C++11)
      Original:
      performs compile-time assertion checking (depuis C++11)
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      [edit]
      provoque la terminaison anormale du programme (sans nettoyage)
      Original:
      causes abnormal program termination (without cleaning up)
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      (fonction)[edit]
      Récupérée de « https://fr.cppreference.com/mwiki/index.php?title=cpp/error/assert&oldid=48105 »
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