From 8557e29d33b365816114996d04531468e13e78b1 Mon Sep 17 00:00:00 2001
From: zlg <zlg@zlg.space>
Date: Wed, 27 Feb 2013 05:54:58 -0600
Subject: Solve Exercise 2-02: No logical operators

The text doesn't specify which technique to use. The section outlined
operator precedence, but I couldn't think of a way to check for truth in
the three main expressions without logical operators. So I turned to a
recursive function. It works, but I'm not sure if it's what K&R were
after.
---
 ch2/2-02_no-logical-operators.c | 44 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 ch2/2-02_no-logical-operators.c

diff --git a/ch2/2-02_no-logical-operators.c b/ch2/2-02_no-logical-operators.c
new file mode 100644
index 0000000..6fea5d6
--- /dev/null
+++ b/ch2/2-02_no-logical-operators.c
@@ -0,0 +1,44 @@
+#include <stdio.h>
+
+/* The C Programming Language, 2nd Edition
+ *
+ * Exercise 2-2: Write a loop equivalent to the 'for' loop above without
+ * using && or ||.
+ *
+ * (The for loop is:
+ *
+ * for (i=0; i < lim - 1 && (c = getchar()) != '\n' && c != EOF)
+ *     i++;
+ *
+ * Answer: A recursive function should do the job. I think...
+ *
+ */
+
+#define LIMIT 17
+
+char test[LIMIT] = "";
+int i = 0;
+int c;
+
+void save_string(char s[]) {
+	if (i < LIMIT - 1) {
+		c = getchar();
+		if (c != '\n') {
+			if (c != EOF) {
+				s[i] = c;
+				i++;
+			} else {
+				return;
+			}
+		} else {
+			return;
+		}
+		save_string(s);
+	}
+}
+
+int main() {
+	save_string(test);
+	printf("%s\n", test);
+	return 0;
+}
-- 
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<div class='path'>path: <a href='/vimrc/log/?showmsg=1&amp;follow=1'>root</a>/<a href='/vimrc/log/colors?showmsg=1&amp;follow=1'>colors</a> (<a href='/vimrc/log/colors?showmsg=1'>unfollow</a>)</div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/vimrc/log/colors?follow=1'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr class='logheader'><td><span title='2020-05-25 20:41:25 -0700'>2020-05-25</span></td><td class='logsubject'><a href='/vimrc/commit/vimrc?id=ad7a5b0213b5fbe3a2782b85f48ea62cdd92f04e&amp;follow=1'>vimrc: Switch pico8 colors, vim syntaxing</a></td><td>zlg</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+2</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
todo.txt is interesting; if it ends up not for me, I'll make my own vim
syntax instead. No big deal.


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<tr class='logheader'><td><span title='2020-05-02 11:19:30 -0700'>2020-05-02</span></td><td class='logsubject'><a href='/vimrc/commit/zlglib.vim?id=526106d592d7203c108e72c2d30eacb70dd7a9d7&amp;follow=1'>Reintegrate personal library as autoload script</a></td><td>zlg</td><td>2</td><td><span class='deletions'>-16</span>/<span class='insertions'>+28</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Functions that I've built up over time were squirreled away in a
separate file for a while, but they were subtly broken and some didn't
work. All functions in the library should now work as expected, and
are easy to integrate into other installations of Vim.


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<tr class='logheader'><td><span title='2020-05-02 11:10:22 -0700'>2020-05-02</span></td><td class='logsubject'><a href='/vimrc/commit/colors/zlg.vim?id=0ca386faa6f7922af78af9dae6b6b33dd34e94cc&amp;follow=1'>colors/zlg.vim: Remove Trailing group</a></td><td>zlg</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+0</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
It wasn't applying correctly on files anyway.


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<tr class='logheader'><td><span title='2018-11-15 22:00:00 -0800'>2018-11-15</span></td><td class='logsubject'><a href='/vimrc/commit/vimrc?id=885e12b6d508e0449502f89813c86476340e4ad0&amp;follow=1'>add SetKeyMap function, export funcs to own file</a></td><td>zlg</td><td>2</td><td><span class='deletions'>-194</span>/<span class='insertions'>+278</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
With this commit, I can toggle between Dvorak and QWERTY layouts with
&lt;Leader&gt;q, making it much easier to edit text over the network.


</td></tr>
<tr class='logheader'><td><span title='2018-11-12 21:07:12 -0800'>2018-11-12</span></td><td class='logsubject'><a href='/vimrc/commit/vimrc?id=2c8706045e6853508ecd29de0e4dab0c51133f44&amp;follow=1'>Clean up function comments</a></td><td>zlg</td><td>1</td><td><span class='deletions'>-7</span>/<span class='insertions'>+11</span></td></tr>
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<tr class='logheader'><td><span title='2018-11-12 21:06:37 -0800'>2018-11-12</span></td><td class='logsubject'><a href='/vimrc/commit/vimrc?id=5279a9997af35f5940c5851e46c4247d38a6ee0a&amp;follow=1'>Add BufDiff()</a></td><td>zlg</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+47</span></td></tr>
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