Add 1990/theorem/try.sh

This script shows not just theorem but the sorter and the Fibonacci
generator as well. For the sorter it reverses output of ls (redirected
to a file) and then shows how using sorter on it results in the same
output of ls (with no options specified). Of course if different ls
sorts output differently this could fail but I did not think of that
until after I wrote it.

1990/theorem/Makefile

@@ -42,7 +42,7 @@ CSILENCE= -Wno-deprecated-declarations -Wno-empty-body -Wno-error -Wno-unused-va
 	-Wno-implicit-function-declaration -Wno-incompatible-pointer-types \
 	-Wno-macro-redefined -Wno-parentheses -Wno-return-type -Wno-unused-parameter \
 	-Wno-empty-translation-unit -Wno-deprecated-non-prototype -Wno-int-conversion \
-	-Wno-strict-prototypes
+	-Wno-strict-prototypes -Wno-implicit-int
 
 # Common C compiler warning flags
 #

1990/theorem/README.md

@@ -36,20 +36,10 @@ y1 - initial value  (y(x1) == y1)
 ### Try:
 
 ```sh
-./theorem y 0 1 0.1 1
+./try.sh
 ```
 
-If the two args passed to `fibonacci` and `theorem_bkp` add to 0 it will
-print 0 over and over again in an infinite loop. In this case it should not be
-fixed (another condition where this occurred was fixed in 2023 as it affected
-usability of the program).
 
-This is supposed to happen.  As is written in the
-[The Jargon File](http://catb.org/jargon/html/F/feature.html):
-
-```
-That's not a bug, that's a feature.
-```
 
 
 ## Judges' remarks:
@@ -113,6 +103,11 @@ make fibonacci
 ./fibonacci 2 1
 ```
 
+NOTE: if the two args passed to `fibonacci` and `theorem_bkp` add to 0 it will
+print 0 over and over again in an infinite loop. In this case it should not be
+fixed (another condition where this occurred was fixed in 2023 as it affected
+usability of the program).
+
 Program available on 9 track and cartridge cassette.  Neither [Ginsu
 knife](https://ginsu.com) nor [Swiss army
 knife](https://en.wikipedia.org/wiki/Swiss_Army_knife) included! :-)

1990/theorem/try.sh

@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 1990/theorem
+#
+
+# 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="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+
+
+
+read -r -n 1 -p "Press any key to run: ./theorem y 0 1 0.1 1: "
+echo 1>&2
+./theorem y 0 1 0.1 1
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./theorem x 1 2 0.1 2: "
+echo 1>&2
+./theorem x 1 2 0.1 2
+echo 1>&2
+
+echo "$ ./theorem -r 0 0 0 0 < theorem.c > sorter.c" 1>&2
+./theorem -r 0 0 0 0 < theorem.c > sorter.c
+echo "$ make sorter" 1>&2
+make sorter
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ls | ./sorter > ls.sorted.txt: "
+echo 1>&2
+# SC2012 (info): Use find instead of ls to better handle non-alphanumeric filenames.
+# shellcheck disable=SC2012
+ls | ./sorter > ls.sorted.txt
+
+read -r -n 1 -p "Press any key to run: ls -r > ls.txt: "
+echo 1>&2
+ls -r > ls.txt
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./sorter < ls.txt: "
+echo 1>&2
+./sorter < ls.txt
+echo 1>&2
+
+read -r -n 1 -p "./sorter < ls.txt > ls.sorted.2.txt: "
+echo 1>&2
+./sorter < ls.txt > ls.sorted.2.txt
+echo 1>&2
+
+read -r -n 1 -p "Press any key to show diff between ls.sorted.2.txt and ls.sorted.txt: "
+echo 1>&2
+diff -s ls.sorted.2.txt ls.sorted.txt
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./sorter 0 0 0 0 < theorem.c > fibonacci.c: "
+./sorter 0 0 0 0 < theorem.c > fibonacci.c
+echo "$ make fibonacci" 1>&2
+make fibonacci
+
+read -r -n 1 -p "Press any key to run: ./fibonacci 1 7: "
+echo 1>&2
+./fibonacci 1 7
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./fibonacci 2 5: "
+echo 1>&2
+./fibonacci 2 5
+echo 1>&2

thanks-for-help.md

@@ -1111,6 +1111,9 @@ with clang in Linux but which was defaulting to an error. This way was the
 simplest way to deal with the problem in question due to the way the entry
 works.
 
+Cody also added the [try.sh](/1990/theorem/try.sh) script which shows the
+original program and some of the programs it generates.
+
 [Yusuke](#yusuke) pointed out that `atof` nowadays needs `#include <stdlib.h>` which was
 used in order to get this to work initially (prior to this output was there but
 incomplete).