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33 lines
637 B
HTML
33 lines
637 B
HTML
<h1>数学函数 - log10</h1>
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<p>原型:extern float log10(float x);</p>
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<p>用法:#include <math.h></p>
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<p>功能:计算x的常用对数。</p>
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<p>说明:x的值应大于零。</p>
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举例:<pre><code class="language-c">
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// log10.c
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#include <syslib.h>
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#include <math.h>
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main()
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{
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float x;
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clrscr(); // clear screen
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textmode(0x00); // 6 lines per LCD screen
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printf("lg(5)=%f\n", log10(5.0));
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getchar();
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return 0;
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}
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</code></pre>相关函数:<a href="log.html">log</a>
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