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ZealOS/docs/Demo/GlobalVars.CC.html
TomAwezome dbf8647d59 Fixed non-writable drive throw on F5 and Ctrl-S. 
Added top & right borders to RawDr.
Improved spacing in some debug and compiler reporting.
Fixed RawPutChar and EdLite tab width.
Fixed Ui missing '0x' prefix syntax highlighter bug.
Added 32BitPaint demo.
2021-07-14 18:38:02 -04:00

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<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF2>//Demonstrates dynamic initialization of vars.</span><span class=cF0>
<a name="l2"></a></span><span class=cF2>//Static vars are, essentually, global vars.</span><span class=cF0>
<a name="l3"></a>
<a name="l4"></a></span><span class=cF1>class</span><span class=cF0> Test
<a name="l5"></a>{
<a name="l6"></a> </span><span class=cF9>I32</span><span class=cF0> time;
<a name="l7"></a> </span><span class=cF1>U8</span><span class=cF0> name[</span><span class=cFE>8</span><span class=cF0>];
<a name="l8"></a>};
<a name="l9"></a>
<a name="l10"></a>Test g1[] = {
<a name="l11"></a> </span><span class=cF7>{</span><span class=cFE>10</span><span class=cF0>, </span><span class=cF6>&quot;Name1&quot;</span><span class=cF7>}</span><span class=cF0>,
<a name="l12"></a> </span><span class=cF7>{</span><span class=cF0>(</span><span class=cF5>tS</span><span class=cF0> % </span><span class=cFE>10</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF0>) * </span><span class=cFE>100</span><span class=cF0>, </span><span class=cF6>&quot;Name2&quot;</span><span class=cF7>}</span><span class=cF0>, </span><span class=cF2>//Dynamic initialization</span><span class=cF0>
<a name="l13"></a> </span><span class=cF7>{</span><span class=cFE>30</span><span class=cF0>, </span><span class=cF6>&quot;Name3&quot;</span><span class=cF7>}</span><span class=cF0>
<a name="l14"></a>};
<a name="l15"></a>
<a name="l16"></a></span><span class=cF5>D</span><span class=cF0>(g1, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF0>g1</span><span class=cF7>)</span><span class=cF0>);
<a name="l17"></a></span><span class=cF6>&quot;Time 1:%d\n&quot;</span><span class=cF0>, g1[</span><span class=cFE>1</span><span class=cF0>].time;
<a name="l18"></a>
<a name="l19"></a></span><span class=cF1>U0</span><span class=cF0> Main1()
<a name="l20"></a>{
<a name="l21"></a> </span><span class=cF1>static</span><span class=cF0> Test s1[] = </span><span class=cF7>{</span><span class=cF0>
<a name="l22"></a> {</span><span class=cFE>10</span><span class=cF0>, </span><span class=cF6>&quot;Static1&quot;</span><span class=cF0>},
<a name="l23"></a> {(</span><span class=cF5>tS</span><span class=cF0> % </span><span class=cFE>10</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF0>) * </span><span class=cFE>100</span><span class=cF0>, </span><span class=cF6>&quot;Static2&quot;</span><span class=cF0>}, </span><span class=cF2>//Dynamic initialization</span><span class=cF0>
<a name="l24"></a> {</span><span class=cFE>30</span><span class=cF0>, </span><span class=cF6>&quot;Static3&quot;</span><span class=cF0>}
<a name="l25"></a> </span><span class=cF7>}</span><span class=cF0>;
<a name="l26"></a> </span><span class=cF5>D</span><span class=cF0>(s1, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF0>s1</span><span class=cF7>)</span><span class=cF0>);
<a name="l27"></a> </span><span class=cF6>&quot;Time 2:%d\n&quot;</span><span class=cF0>, s1[</span><span class=cFE>1</span><span class=cF0>].time;
<a name="l28"></a>}
<a name="l29"></a>
<a name="l30"></a>Main1;
<a name="l31"></a>
<a name="l32"></a></span><span class=cF2>/*Now, we'll use the data heap global option</span><span class=cF0>
<a name="l33"></a></span><span class=cF2>to force global vars onto the data heap.</span><span class=cF0>
<a name="l34"></a>
<a name="l35"></a></span><span class=cF2>You can turn the data heap flag</span><span class=cF0>
<a name="l36"></a></span><span class=cF2>on and off within your programs, leaving</span><span class=cF0>
<a name="l37"></a></span><span class=cF2>ones which need initialization on the code heap.</span><span class=cF0>
<a name="l38"></a>
<a name="l39"></a></span><span class=cF2>You can't dynamically initialize data heap</span><span class=cF0>
<a name="l40"></a></span><span class=cF2>globals--they are consts. This might be a silly</span><span class=cF0>
<a name="l41"></a></span><span class=cF2>point, but might res in odd differences, perhaps</span><span class=cF0>
<a name="l42"></a></span><span class=cF2>from the order things are evaluated.</span><span class=cF0>
<a name="l43"></a>
<a name="l44"></a></span><span class=cF2>Data heap globals are good for AOT modules</span><span class=cF0>
<a name="l45"></a></span><span class=cF2>because they don't take-up room in the .BIN file.</span><span class=cF0>
<a name="l46"></a></span><span class=cF2>*/</span><span class=cF0>
<a name="l47"></a>
<a name="l48"></a>#</span><span class=cF1>ifjit</span><span class=cF0>
<a name="l49"></a>#</span><span class=cF1>exe</span><span class=cF0> {</span><span class=cF5>Option</span><span class=cF0>(</span><span class=cF3>OPTf_GLOBALS_ON_DATA_HEAP</span><span class=cF0>, </span><span class=cF3>ON</span><span class=cF0>);};
<a name="l50"></a>
<a name="l51"></a>Test g2[] = {
<a name="l52"></a> </span><span class=cF7>{</span><span class=cFE>10</span><span class=cF0>, </span><span class=cF6>&quot;name1&quot;</span><span class=cF7>}</span><span class=cF0>,
<a name="l53"></a> </span><span class=cF7>{</span><span class=cF0>(</span><span class=cF5>tS</span><span class=cF0> % </span><span class=cFE>10</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF0>) * </span><span class=cFE>100</span><span class=cF0>, </span><span class=cF6>&quot;name2&quot;</span><span class=cF7>}</span><span class=cF0>, </span><span class=cF2>//No dynamic initialization--converted to const</span><span class=cF0>
<a name="l54"></a> </span><span class=cF7>{</span><span class=cFE>30</span><span class=cF0>, </span><span class=cF6>&quot;name3&quot;</span><span class=cF7>}</span><span class=cF0>
<a name="l55"></a>};
<a name="l56"></a>
<a name="l57"></a></span><span class=cF5>D</span><span class=cF0>(g2, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF0>g2</span><span class=cF7>)</span><span class=cF0>);
<a name="l58"></a></span><span class=cF6>&quot;Time 3:%d\n&quot;</span><span class=cF0>, g2[</span><span class=cFE>1</span><span class=cF0>].time;
<a name="l59"></a>
<a name="l60"></a></span><span class=cF1>U0</span><span class=cF0> Main2()
<a name="l61"></a>{
<a name="l62"></a> </span><span class=cF1>static</span><span class=cF0> Test s2[] = </span><span class=cF7>{</span><span class=cF0>
<a name="l63"></a> {</span><span class=cFE>10</span><span class=cF0>, </span><span class=cF6>&quot;static1&quot;</span><span class=cF0>},
<a name="l64"></a> {(</span><span class=cF5>tS</span><span class=cF0> % </span><span class=cFE>10</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF0>) * </span><span class=cFE>100</span><span class=cF0>, </span><span class=cF6>&quot;static2&quot;</span><span class=cF0>}, </span><span class=cF2>//No dynamic initialization--converted to const</span><span class=cF0>
<a name="l65"></a> {</span><span class=cFE>30</span><span class=cF0>, </span><span class=cF6>&quot;static3&quot;</span><span class=cF0>}
<a name="l66"></a> </span><span class=cF7>}</span><span class=cF0>;
<a name="l67"></a> </span><span class=cF5>D</span><span class=cF0>(s2, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF0>s2</span><span class=cF7>)</span><span class=cF0>);
<a name="l68"></a> </span><span class=cF6>&quot;Time 4:%d\n&quot;</span><span class=cF0>, s2[</span><span class=cFE>1</span><span class=cF0>].time;
<a name="l69"></a>}
<a name="l70"></a>
<a name="l71"></a>Main2;
<a name="l72"></a>
<a name="l73"></a>#</span><span class=cF1>exe</span><span class=cF0> {</span><span class=cF5>Option</span><span class=cF0>(</span><span class=cF3>OPTf_GLOBALS_ON_DATA_HEAP</span><span class=cF0>, </span><span class=cF3>ON</span><span class=cF0>);};
<a name="l74"></a>#</span><span class=cF1>endif</span><span class=cF0>
<a name="l75"></a>
<a name="l76"></a></span><span class=cF6>'\n'</span><span class=cF0>;
</span></pre></body>
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