ANSI_strict

Controls the use of non-standard language features.

#pragma ANSI_strict on | off | reset

If you enable the pragma ANSI_strict, the compiler generates an error if it encounters any of the following common ANSI extensions:

• C++-style comments. The following listing shows an example.
  Listing: C++ Comments

  a = b;    // This is a C++-style comment

• Unnamed arguments in function definitions. The following listing shows an example.
  Listing: Unnamed Arguments

  void f(int ) {} /* OK, if ANSI Strict is disabled */
  
  void f(int i) {} /* ALWAYS OK                       */

• A # token that does not appear before an argument in a macro definition. The following listing shows an example.
  Listing: Using # in Macro Definitions

  #define add1(x) #x #1
  
        /* OK, if ANSI_strict is disabled,
  
  
  
           but probably not what you wanted:
  
  
  
           add1(abc) creates "abc"#1            */
  
  
  
  #define add2(x) #x "2"
  
  
  
        /* ALWAYS OK: add2(abc) creates "abc2"  */

• An identifier after #endif. The following listing shows an example.
  Listing: Identifiers After #endif

  #ifdef __MWERKS__
  
    /* . . . */
  
  
  
  #endif __MWERKS__       /* OK, if ANSI_strict is disabled */
  
  
  
  #ifdef __MWERKS__
  
  
  
    /* . . . */
  
  
  
  #endif /*__MWERKS__*/   /* ALWAYS OK  */

This pragma corresponds to the ANSI Strict setting in the Language panel. To check this setting, use __option (ANSI_strict), described in Checking Pragma Settings. By default, this pragma is disabled.