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 spawnlpe()              Execute Program Using Arg List, PATH, Environment

 #include   <process.h>

 int        spawnlpe(modeflag,pathname,arg0,arg1,...,argn,NULL,envp);
 int        modeflag;                    Execution mode for parent process
 char       *pathname;                   Path name of file to be executed
 char       *arg0,*arg1,...,*argn;       List of pointers to argument
 char       *envp[];                     Array of pointers to environment
                                         settings

    spawnlpe() operates exactly like spawnle(), with one exception:  If
    'pathname' is not found as described in spawnle(), then spawnlpe()
    uses the current directory followed by the DOS PATH to continue the
    search for the path name.  Otherwise, the two functions are
    identical; see spawnle() for a complete description.

   Portability:     MS-DOS only.

   -------------------------------- Example ---------------------------------

    The following statements transfer execution to the child process
    "child.exe" and pass it the three arguments "child", "arg1", and
    "arg2".  "child.exe" can be in the current directory or any PATH
    directory.  If "child.exe" is found, the PATH environment variable is
    set to "C:\TEST" for the child process.  The exit status of the child
    is printed upon return.

           #include <process.h>    /* for 'spawnlpe' and 'P_WAIT' */
           #include <stdio.h>      /* for 'printf' and 'NULL' */
           #include <errno.h>      /* for 'errno', 'ENOENT' and 'ENOMEM' */

           char *env[] = {"PATH=C:\\TEST", NULL};

           main()
           {
               int result;

               result = spawnlpe(P_WAIT,"child.exe","child",
                                 "arg1","arg2",NULL,env);
               if (result != -1)
                   printf("exit status of child.exe = %d\n", result);
               else {
                   if (errno == ENOENT) {
                       printf("child.exe not found in current directory,\n");
                       printf("  or in any PATH directory.\n");
                   }
                   else if (errno == ENOMEM)
                       printf("not enough memory to execute child.exe\n");
                   else
                       printf("error #%d trying to spawn child.exe\n",
                               errno);
               }
           }