Add 1995/vanschnitz/try.sh

1995/vanschnitz/README.md

@@ -29,8 +29,7 @@ For more detailed information see [1995 vanschnitz in bugs.md](/bugs.md#1995-van
 ## Try:
 
 ```sh
-make clobber all LEVEL=6
-./vanschnitz
+./try.sh
 ```
 
 

1995/vanschnitz/try.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 1995/vanschnitz
+#
+
+# 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" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+read -r -n 1 -p "Press any key to run: ./vanschnitz (space = next page, q = quit): "
+echo 1>&2
+./vanschnitz | less -rEXF
+echo 1>&2
+
+for i in $(seq 1 6); do
+    read -r -n 1 -p "Press any key to set level at $i (make clobber all LEVEL=$i): "
+    echo 1>&2
+    make clobber all LEVEL="$i"
+    read -r -n 1 -p "Press any key to run: ./vanschnitz (space = next page, q = quit): "
+    echo 1>&2
+    ./vanschnitz | less -rEXF
+done