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diff --git a/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.html b/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.html
index 70e1c34e..bedf6692 100644
--- a/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.html
+++ b/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.html
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<a href="https://foo.zone">Home</a> | <a href="https://codeberg.org/snonux/foo.zone/src/branch/content-md/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.md">Markdown</a> | <a href="gemini://foo.zone/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.gmi">Gemini</a>
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@@ -39,37 +34,37 @@
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
-<pre><font color="#ababab">#include</font><font color="#ff0000"> </font><font color="#bb00ff">&lt;stdio.h&gt;</font>
+<pre><b><u><font color="#000000">#include</font></u></b> <font color="#808080">&lt;stdio.h&gt;</font>
-<b><font color="#ffffff">typedef</font></b><font color="#ff0000"> </font><b><font color="#ffffff">struct</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font>
-<font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> </font><font color="#F3E651">(*</font><font color="#ff0000">calculate</font><font color="#F3E651">)(</font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#F3E651">);</font>
-<font color="#ff0000"> </font><b><font color="#F35E1E">char</font></b><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000">name</font><font color="#F3E651">;</font>
-<font color="#F3E651">}</font><font color="#ff0000"> something_s</font><font color="#F3E651">;</font>
+<b><u><font color="#000000">typedef</font></u></b> <b><u><font color="#000000">struct</font></u></b> {
+ <b><font color="#000000">double</font></b> (*calculate)(<b><u><font color="#000000">const</font></u></b> <b><font color="#000000">double</font></b>, <b><u><font color="#000000">const</font></u></b> <b><font color="#000000">double</font></b>);
+ <b><font color="#000000">char</font></b> *name;
+} something_s;
-<b><font color="#F35E1E">double</font></b><font color="#ff0000"> </font><font color="#7bc710">multiplication</font><font color="#F3E651">(</font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> b</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font>
-<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> a </font><font color="#F3E651">*</font><font color="#ff0000"> b</font><font color="#F3E651">;</font>
-<font color="#F3E651">}</font>
+<b><font color="#000000">double</font></b> multiplication(<b><u><font color="#000000">const</font></u></b> <b><font color="#000000">double</font></b> a, <b><u><font color="#000000">const</font></u></b> <b><font color="#000000">double</font></b> b) {
+ <b><u><font color="#000000">return</font></u></b> a * b;
+}
-<b><font color="#F35E1E">double</font></b><font color="#ff0000"> </font><font color="#7bc710">division</font><font color="#F3E651">(</font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> b</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font>
-<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> a </font><font color="#F3E651">/</font><font color="#ff0000"> b</font><font color="#F3E651">;</font>
-<font color="#F3E651">}</font>
+<b><font color="#000000">double</font></b> division(<b><u><font color="#000000">const</font></u></b> <b><font color="#000000">double</font></b> a, <b><u><font color="#000000">const</font></u></b> <b><font color="#000000">double</font></b> b) {
+ <b><u><font color="#000000">return</font></u></b> a / b;
+}
-<b><font color="#F35E1E">int</font></b><font color="#ff0000"> </font><font color="#7bc710">main</font><font color="#F3E651">(</font><b><font color="#F35E1E">void</font></b><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font>
-<font color="#ff0000"> </font><font color="#ff0000">something_s</font><font color="#ff0000"> mult </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">something_s</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font>
-<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">calculate </font><font color="#F3E651">=</font><font color="#ff0000"> multiplication</font><font color="#F3E651">,</font>
-<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">name </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">"Multiplication"</font>
-<font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font>
+<b><font color="#000000">int</font></b> main(<b><font color="#000000">void</font></b>) {
+ something_s mult = (something_s) {
+ .calculate = multiplication,
+ .name = <font color="#808080">"Multiplication"</font>
+ };
-<font color="#ff0000"> </font><font color="#ff0000">something_s</font><font color="#ff0000"> div </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">something_s</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font>
-<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">calculate </font><font color="#F3E651">=</font><font color="#ff0000"> division</font><font color="#F3E651">,</font>
-<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">name </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">"Division"</font>
-<font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font>
+ something_s div = (something_s) {
+ .calculate = division,
+ .name = <font color="#808080">"Division"</font>
+ };
-<font color="#ff0000"> </font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> a </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">3</font><font color="#F3E651">,</font><font color="#ff0000"> b </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">2</font><font color="#F3E651">;</font>
+ <b><u><font color="#000000">const</font></u></b> <b><font color="#000000">double</font></b> a = <font color="#000000">3</font>, b = <font color="#000000">2</font>;
-<font color="#ff0000"> </font><font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) =&gt; %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> mult</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> mult</font><font color="#F3E651">.</font><font color="#7bc710">calculate</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font>
-<font color="#ff0000"> </font><font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) =&gt; %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> div</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> div</font><font color="#F3E651">.</font><font color="#7bc710">calculate</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font>
-<font color="#F3E651">}</font>
+ printf(<font color="#808080">"%s(%f, %f) =&gt; %f</font>\n<font color="#808080">"</font>, mult.name, a, b, mult.calculate(a,b));
+ printf(<font color="#808080">"%s(%f, %f) =&gt; %f</font>\n<font color="#808080">"</font>, div.name, a, b, div.calculate(a,b));
+}
</pre>
<br />
<span>As you can see, you can call the function (pointed by the function pointer) with the same syntax as in C++ or Java:</span><br />
@@ -78,8 +73,8 @@ http://www.gnu.org/software/src-highlite -->
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
-<pre><font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) =&gt; %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> mult</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> mult</font><font color="#F3E651">.</font><font color="#7bc710">calculate</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font>
-<font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) =&gt; %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> div</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> div</font><font color="#F3E651">.</font><font color="#7bc710">calculate</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font>
+<pre>printf(<font color="#808080">"%s(%f, %f) =&gt; %f</font>\n<font color="#808080">"</font>, mult.name, a, b, mult.calculate(a,b));
+printf(<font color="#808080">"%s(%f, %f) =&gt; %f</font>\n<font color="#808080">"</font>, div.name, a, b, div.calculate(a,b));
</pre>
<br />
<span>However, that&#39;s just syntactic sugar for:</span><br />
@@ -88,8 +83,8 @@ http://www.gnu.org/software/src-highlite -->
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
-<pre><font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) =&gt; %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> mult</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#F3E651">(*</font><font color="#ff0000">mult</font><font color="#F3E651">.</font><font color="#ff0000">calculate</font><font color="#F3E651">)(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font>
-<font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) =&gt; %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> div</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#F3E651">(*</font><font color="#ff0000">div</font><font color="#F3E651">.</font><font color="#ff0000">calculate</font><font color="#F3E651">)(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font>
+<pre>printf(<font color="#808080">"%s(%f, %f) =&gt; %f</font>\n<font color="#808080">"</font>, mult.name, a, b, (*mult.calculate)(a,b));
+printf(<font color="#808080">"%s(%f, %f) =&gt; %f</font>\n<font color="#808080">"</font>, div.name, a, b, (*div.calculate)(a,b));
</pre>
<br />
<span>Output:</span><br />
@@ -98,10 +93,10 @@ http://www.gnu.org/software/src-highlite -->
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
-<pre><font color="#ff0000">pbuetow </font><font color="#F3E651">~</font><font color="#ff0000">/git/blog/source </font><font color="#F3E651">[</font><font color="#bb00ff">38268</font><font color="#F3E651">]%</font><font color="#ff0000"> gcc oop-c-example</font><font color="#F3E651">.</font><font color="#ff0000">c -o oop-c-example</font>
-<font color="#ff0000">pbuetow </font><font color="#F3E651">~</font><font color="#ff0000">/git/blog/source </font><font color="#F3E651">[</font><font color="#bb00ff">38269</font><font color="#F3E651">]%</font><font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">/oop-c-example</font>
-<font color="#ff0000">Multiplication</font><font color="#F3E651">(</font><font color="#bb00ff">3.000000</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">2.000000</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=&gt;</font><font color="#ff0000"> </font><font color="#bb00ff">6.000000</font>
-<font color="#ff0000">Division</font><font color="#F3E651">(</font><font color="#bb00ff">3.000000</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">2.000000</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=&gt;</font><font color="#ff0000"> </font><font color="#bb00ff">1.500000</font>
+<pre>pbuetow ~/git/blog/source [<font color="#000000">38268</font>]% gcc oop-c-example.c -o oop-c-example
+pbuetow ~/git/blog/source [<font color="#000000">38269</font>]% ./oop-c-example
+Multiplication(<font color="#000000">3.000000</font>, <font color="#000000">2.000000</font>) =&gt; <font color="#000000">6.000000</font>
+Division(<font color="#000000">3.000000</font>, <font color="#000000">2.000000</font>) =&gt; <font color="#000000">1.500000</font>
</pre>
<br />
<span>Not complicated at all, but nice to know and helps to make the code easier to read!</span><br />
@@ -114,7 +109,7 @@ http://www.gnu.org/software/src-highlite -->
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
-<pre><font color="#ff0000">mult</font><font color="#F3E651">.</font><font color="#7bc710">calculate</font><font color="#F3E651">(</font><font color="#ff0000">mult</font><font color="#F3E651">,</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font>
+<pre>mult.calculate(mult,a,b));
</pre>
<br />
<h2 style='display: inline' id='real-object-oriented-programming-with-c'>Real object oriented programming with C</h2><br />
@@ -135,11 +130,11 @@ http://www.gnu.org/software/src-highlite -->
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