--- /dev/null
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+
+
+
+FILE* Fopen (const char* Name, const char* Mode)
+{
+ FILE* F;
+ printf ("Opening %s(%s): ", Name, Mode);
+ F = fopen (Name, Mode);
+ if (F) {
+ printf ("Ok (%d)\n", fileno (F));
+ } else {
+ printf (strerror (errno));
+ }
+ return F;
+}
+
+
+
+void Fwrite (FILE* F, const void* Buf, unsigned Size)
+{
+ size_t Res;
+ Res = fwrite (Buf, 1, Size, F);
+ printf ("Writing %u bytes to %d: %u\n", Size, fileno (F), Res);
+}
+
+
+
+int Fread (FILE* F, void* Buf, unsigned Size)
+{
+ size_t Res;
+ Res = fread (Buf, 1, Size, F);
+ printf ("Reading %u bytes from %d: %u\n", Size, fileno (F), Res);
+ return Res > 0? Res : 0;
+}
+
+
+
+void Fclose (FILE* F)
+{
+ printf ("Closing %d:", fileno (F));
+ if (fclose (F) == 0) {
+ printf ("Ok\n");
+ } else {
+ printf (strerror (errno));
+ }
+}
+
+
+
+int main (void)
+{
+ FILE* F1;
+ FILE* F2;
+ int Res;
+ static const char text1[] = "This goes into file #1\n";
+ static const char text2[] = "This goes into file #2\n";
+ static const char text3[] = "This goes into file #3\n";
+ static const char text4[] = "This goes into file #4\n";
+ static char Buf[200];
+
+
+ F1 = Fopen ("foobar1", "w");
+ F2 = Fopen ("foobar2", "w");
+
+ Fwrite (F1, text1, sizeof (text1) - 1);
+ Fwrite (F2, text2, sizeof (text2) - 1);
+ Fwrite (F1, text1, sizeof (text1) - 1);
+ Fwrite (F2, text2, sizeof (text2) - 1);
+
+ Fclose (F1);
+ Fclose (F2);
+
+ F1 = Fopen ("foobar3", "w");
+ F2 = Fopen ("foobar4", "w");
+
+ Fwrite (F1, text3, sizeof (text3) - 1);
+ Fwrite (F2, text4, sizeof (text4) - 1);
+ Fwrite (F1, text3, sizeof (text3) - 1);
+ Fwrite (F2, text4, sizeof (text4) - 1);
+
+ Fclose (F1);
+ Fclose (F2);
+
+ F1 = Fopen ("foobar1", "r");
+ Res = Fread (F1, Buf, sizeof (Buf));
+ printf ("%.*s", Res, Buf);
+ Res = Fread (F1, Buf, sizeof (Buf));
+ Fclose (F1);
+
+ return 0;
+}
+
+