1 files changed, 29 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/SNIP/strupr.c b/reference/C/CONTRIB/SNIP/strupr.c
new file mode 100755
index 0000000..a4bca57
--- /dev/null
+++ b/reference/C/CONTRIB/SNIP/strupr.c
@@ -0,0 +1,29 @@
+/*
+**  Portable, public domain strupr() & strlwr()
+*/
+
+#include <ctype.h>
+
+char *strupr(char *str)
+{
+      char *string = str;
+
+      if (str)
+      {
+            for ( ; *str; ++str)
+                  *str = toupper(*str);
+      }
+      return string;
+}
+
+char *strlwr(char *str)
+{
+      char *string = str;
+
+      if (str)
+      {
+            for ( ; *str; ++str)
+                  *str = tolower(*str);
+      }
+      return string;
+}