1 files changed, 54 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/SNIP/favail.c b/reference/C/CONTRIB/SNIP/favail.c
new file mode 100755
index 0000000..78a7c0d
--- /dev/null
+++ b/reference/C/CONTRIB/SNIP/favail.c
@@ -0,0 +1,54 @@
+/*
+**  Find out how many more files can be fopen'ed
+**
+**  public domain demo by Bob Stout
+*/
+
+#include <stdio.h>
+
+#ifdef __TURBOC__
+ #define STREAM_BUF     _streams
+ #define FCNT           FOPEN_MAX
+ #define FLAG           flags
+#else /* MSC, ZTC++ */
+ #define STREAM_BUF     _iob
+ #define FCNT           _NFILE
+ #define FLAG           _flag
+#endif
+
+int favail(void)
+{
+      int i, count;
+
+      for (i = count = 0; i < FCNT; ++i)
+      {
+            if (0 == STREAM_BUF[i].FLAG)
+                  ++count;
+      }
+      return count;
+}
+
+#ifdef TEST
+
+void main(void)
+{
+      char *fname = "A$$$$$$$.$$$";
+      FILE *fp;
+
+      do
+      {
+            int i = favail();
+
+            printf("You can fopen %d new file%s\n", i, &"s"[i == 1]);
+            fp = fopen(fname, "w");
+            *fname += 1;
+      } while (fp);
+
+      do
+      {
+            printf("removing %s\n", fname);
+            remove(fname);
+      } while ('A' <= --(*fname)) ;
+}
+
+#endif /*TEST */