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<title>CStruct:Examples:Struct member</title>
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<div class="code"><pre><span class="c"># CStruct Examples</span>
require <span class="s"><span class="dl">'</span><span class="k">cstruct</span><span class="dl">'</span></span>
<span class="c"># example:</span>
<span class="c"># struct Point in C\C++ (32-bit platform): </span>
<span class="c">#</span>
<span class="c"># struct Point</span>
<span class="c"># {</span>
<span class="c"># int x;</span>
<span class="c"># int y;</span>
<span class="c"># }; </span>
<span class="c">#</span>
<span class="c"># struct Line in C\C++ (32-bit platform): </span>
<span class="c">#</span>
<span class="c"># struct Line</span>
<span class="c"># {</span>
<span class="c"># Point begin_point;</span>
<span class="c"># Point end_point;</span>
<span class="c"># }; </span>
<span class="c"># struct TwoLine in C\C++ (32-bit platform): </span>
<span class="c">#</span>
<span class="c"># struct TwoLine</span>
<span class="c"># {</span>
<span class="c"># Line lines[2];</span>
<span class="c"># }; </span>
<span class="c"># struct Point , Line and TwoLine in Ruby: </span>
<span class="r">class</span> <span class="cl">Point</span> < <span class="co">CStruct</span>
int32<span class="sy">:x</span>
int32<span class="sy">:y</span>
<span class="r">end</span>
<span class="r">class</span> <span class="cl">Line</span> < <span class="co">CStruct</span>
<span class="co">Point</span><span class="sy">:begin_point</span>
<span class="co">Point</span><span class="sy">:end_point</span>
<span class="r">end</span>
<span class="r">class</span> <span class="cl">TwoLine</span> < <span class="co">CStruct</span>
<span class="co">Line</span><span class="sy">:lines</span>,[<span class="i">2</span>]
<span class="r">end</span>
line = <span class="co">Line</span>.new
<span class="c"># assign like as C language</span>
line.begin_point.x = <span class="i">0</span>
line.begin_point.y = <span class="i">0</span>
line.end_point.x = <span class="i">20</span>
line.end_point.y = <span class="i">30</span>
puts <span class="s"><span class="dl">"</span><span class="k">sizeof(Line) = </span><span class="il"><span class="idl">#{</span><span class="co">Line</span>.__size__<span class="idl">}</span></span><span class="dl">"</span></span> <span class="c"># "__size__" is alias of "size"</span>
puts <span class="s"><span class="dl">"</span><span class="k">line.begin_point.x = </span><span class="il"><span class="idl">#{</span>line.begin_point.x<span class="idl">}</span></span><span class="dl">"</span></span>
puts <span class="s"><span class="dl">"</span><span class="k">line.begin_point.y = </span><span class="il"><span class="idl">#{</span>line.begin_point.y<span class="idl">}</span></span><span class="dl">"</span></span>
puts <span class="s"><span class="dl">"</span><span class="k">line.end_point.x = </span><span class="il"><span class="idl">#{</span>line.end_point.x<span class="idl">}</span></span><span class="dl">"</span></span>
puts <span class="s"><span class="dl">"</span><span class="k">line.end_point.y = </span><span class="il"><span class="idl">#{</span>line.end_point.y<span class="idl">}</span></span><span class="dl">"</span></span>
two_line = <span class="co">TwoLine</span>.new
<span class="c"># assign like as C language</span>
two_line.lines[<span class="i">0</span>].begin_point.x = <span class="i">6</span>
two_line.lines[<span class="i">0</span>].begin_point.y = <span class="i">16</span>
two_line.lines[<span class="i">0</span>].end_point.x = <span class="i">26</span>
two_line.lines[<span class="i">0</span>].end_point.y = <span class="i">36</span>
two_line.lines[<span class="i">1</span>].begin_point.x = <span class="i">6</span>
two_line.lines[<span class="i">1</span>].begin_point.y = <span class="i">16</span>
two_line.lines[<span class="i">1</span>].end_point.x = <span class="i">26</span>
two_line.lines[<span class="i">1</span>].end_point.y = <span class="i">36</span>
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