first flow of .h, one main() compilng

xmem.h

@@ -0,0 +1,26 @@
+/*
+ * xmem
+ * architecture clients/serveur guinness : gestion mémoire
+ * Thomas Nemeth -- le 24 août 2001
+ *
+ */
+
+
+#ifndef GUINNESS_XMEM
+#define GUINNESS_XMEM
+
+#include <string.h>
+#include <strings.h>
+
+void *xmalloc (size_t taille);
+char *xstrdup (const char *chaine);
+
+
+#define IS_NOT_GOOD(string) (! string || (strcmp (string, "") == 0))
+
+#define SET_STRING(string, value) {\
+    if (string) free (string); \
+    string = xstrdup (value); }
+
+
+#endif