1 files changed, 52 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/SNIP/changprn.c b/reference/C/CONTRIB/SNIP/changprn.c
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+++ b/reference/C/CONTRIB/SNIP/changprn.c
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+/*
+**  change_prn()
+**
+**  A function to change the standard printer device for the duration
+**  of a program. Valid new device codes are:
+**
+**      0 - LPT1
+**      1 - LPT2
+**      2 - LPT3
+**      3 - COM1
+**      4 - COM2
+**      5 - CON
+**
+**  Original Copyright 1988-1991 by Bob Stout as part of
+**  the MicroFirm Function Library (MFL)
+**
+**  This subset version is functionally identical to the
+**  version originally published by the author in Tech Specialist
+**  magazine and is hereby donated to the public domain.
+*/
+
+#include <stdio.h>
+
+int change_prn(int device)
+{
+      char *newdev;
+
+      switch (device)
+      {
+      case 0:
+            newdev = "LPT1";
+            break;
+      case 1:
+            newdev = "LPT2";
+            break;
+      case 2:
+            newdev = "LPT3";
+            break;
+      case 3:
+            newdev = "COM1";
+            break;
+      case 4:
+            newdev = "COM2";
+            break;
+      case 5:
+            newdev = "CON";
+            break;
+      default:
+            return -1;
+      }
+      return (NULL == freopen(newdev, "w", stdprn));
+}