Improve 2012/kang scripts

Get CC, defaulting to cc.

2012/kang/try.sh

@@ -1,6 +1,18 @@
 #!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2012/kang
 
-make everything || exit 1
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" everything >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
 
 echo "$ echo Nineteen hundred and eighty-four | ./kang"
 echo Nineteen hundred and eighty-four | ./kang