Question

我需要存储在uint8_t指针确定数组的位置。

示例：

uint8_t array[40] = {1,2,3,etc...}

uint8_t *pointer = array[5] - [25]。保存指针只在5到25之间的位置。我需要用C ++语言。

感谢社区！

Answer 1

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                        <pre class="code" style="background: #f1f1f1;"><code class="php"><span style="color: #0275d8; font-weight: bold;">if</span><span style="color: #A67f59;">(</span> <span style="color: #04527F;">$line_numbers</span> <span style="color: #A67f59;">&amp;&amp;</span> <span style="color: #04527F;">$line_numbers</span> <span style="color: #A67f59;">!==</span> <span style="color: #707070;">'false'</span> <span style="color: #A67f59;">)</span> <span style="color: #A67f59;">{</span>
	<span style="color: #04527F;">$output</span> <span style="color: #A67f59;">.=</span> <span style="color: #707070;">'&lt;div class="line_numbers"&gt;'</span><span style="color: #A67f59;">;</span>
&nbsp;
	<span style="color: #04527F;">$line_count</span> <span style="color: #A67f59;">=</span> <span style="color: #0275d8; font-weight: bold;">substr_count</span><span style="color: #A67f59;">(</span> <span style="color: #04527F;">$code</span><span style="color: #A67f59;">,</span> <span style="color: #707070;">"<span style="color: #000099; font-weight: bold;">\n</span>"</span> <span style="color: #A67f59;">)</span><span style="color: #A67f59;">;</span>
	<span style="color: #04527F;">$line_start</span> <span style="color: #A67f59;">=</span> <span style="color: #A67f59;">(</span> <span style="color: #0275d8; font-weight: bold;">is_numeric</span><span style="color: #A67f59;">(</span> <span style="color: #04527F;">$line_numbers</span> <span style="color: #A67f59;">)</span> ? <span style="color: #04527F;">$line_numbers</span> <span style="color: #A67f59;">:</span> <span style="color: #70B9EF;">1</span> <span style="color: #A67f59;">)</span><span style="color: #A67f59;">;</span>
&nbsp;
	<span style="color: #0275d8; font-weight: bold;">for</span><span style="color: #A67f59;">(</span> <span style="color: #04527F;">$i</span> <span style="color: #A67f59;">=</span> <span style="color: #70B9EF;">0</span><span style="color: #A67f59;">;</span> <span style="color: #04527F;">$i</span> <span style="color: #A67f59;">&lt;=</span> <span style="color: #04527F;">$line_count</span><span style="color: #A67f59;">;</span> <span style="color: #04527F;">$i</span><span style="color: #A67f59;">++</span> <span style="color: #A67f59;">)</span> <span style="color: #A67f59;">{</span>
		<span style="color: #0275d8; font-weight: bold;">if</span><span style="color: #A67f59;">(</span> is_tax<span style="color: #A67f59;">(</span> <span style="color: #707070;">'files'</span> <span style="color: #A67f59;">)</span> <span style="color: #A67f59;">)</span>
		<span style="color: #A67f59;">{</span>
			<span style="color: #04527F;">$output</span> <span style="color: #A67f59;">.=</span> <span style="color: #707070;">'&lt;span id="L'</span> <span style="color: #A67f59;">.</span> <span style="color: #0275d8; font-weight: bold;">sprintf</span><span style="color: #A67f59;">(</span><span style="color: #707070;">"<span style="color: #009933; font-weight: bold;">%02d</span>"</span><span style="color: #A67f59;">,</span> <span style="color: #04527F;">$i</span> <span style="color: #A67f59;">+</span> <span style="color: #70B9EF;">1</span> <span style="color: #A67f59;">)</span> <span style="color: #A67f59;">.</span> <span style="color: #707070;">'"&gt;'</span> <span style="color: #A67f59;">.</span> <span style="color: #A67f59;">(</span> <span style="color: #04527F;">$line_start</span> <span style="color: #A67f59;">+</span> <span style="color: #04527F;">$i</span> <span style="color: #A67f59;">)</span> <span style="color: #A67f59;">.</span> <span style="color: #707070;">"&lt;/span&gt;<span style="color: #000099; font-weight: bold;">\n</span>"</span><span style="color: #A67f59;">;</span>
		<span style="color: #A67f59;">}</span>
		<span style="color: #0275d8; font-weight: bold;">else</span>
		<span style="color: #A67f59;">{</span>
			<span style="color: #04527F;">$output</span> <span style="color: #A67f59;">.=</span> <span style="color: #A67f59;">(</span> <span style="color: #04527F;">$line_start</span> <span style="color: #A67f59;">+</span> <span style="color: #04527F;">$i</span> <span style="color: #A67f59;">)</span> <span style="color: #A67f59;">.</span> <span style="color: #707070;">"<span style="color: #000099; font-weight: bold;">\n</span>"</span><span style="color: #A67f59;">;</span>
		<span style="color: #A67f59;">}</span>
	<span style="color: #A67f59;">}</span>
&nbsp;
	<span style="color: #04527F;">$output</span> <span style="color: #A67f59;">.=</span> <span style="color: #707070;">'&lt;/div&gt;'</span><span style="color: #A67f59;">;</span>
<span style="color: #A67f59;">}</span></code></pre>
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保存指针中的确定位置

1 个答案: