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How getting DOS variable like ERRORLEVEL from Windoz. ?

Posted on 1998-09-17
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Last Modified: 2013-11-20
How getting DOS variable like ERRORLEVEL from Windoz. ?
(after doing a ShellExecute operation to run the Dos programm)
thx .. please answer to Mickael@model-fx.com
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Question by:SkizoWalker
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psdavis earned 200 total points
ID: 1322240
How about _getenv and _setenv?

/* GETENV.C: This program uses getenv to retrieve
 * the LIB environment variable and then uses
 * _putenv to change it to a new value.
 */

#include <stdlib.h>
#include <stdio.h>

void main( void )
{
   char *libvar;

   /* Get the value of the LIB environment variable. */
   libvar = getenv( "LIB" );

   if( libvar != NULL )
      printf( "Original LIB variable is: %s\n", libvar );

   /* Attempt to change path. Note that this only affects the environment
    * variable of the current process. The command processor's environment
    * is not changed.
    */
   _putenv( "LIB=c:\\mylib;c:\\yourlib" );

   /* Get new value. */
   libvar = getenv( "LIB" );

   if( libvar != NULL )
      printf( "New LIB variable is: %s\n", libvar );
}


Phillip
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