// Umgebungsvariable "LOGONSERVER" ermitteln
#include <stdio.h>
#include <stdlib.h>
 
//------------------------------------------------------------------
int main(void)
{
 char* env;
 
        env = getenv("LOGONSERVER");
	if ( env ) {
	   printf("variable: %s\n",env);
	} else {
	   printf("getenv() failed\n");
	   exit(1);
	}
	return 0;
}