/*
	gcc processus_2.c
	Exemple : ./a.out PATH
*/
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char* argv[]) 
{
  if (argc != 2)
  { 
	fprintf (stderr, "Syntaxe : %s <nom-de-variable>\n", argv[0]); 
	exit (1); 
  }
  printf ("\n%s\n\n", getenv (argv[1]));
  return EXIT_SUCCESS;
}