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32 lines
585 B
HTML
32 lines
585 B
HTML
<h1>数学函数 - sqrt</h1>
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<p>原型:extern float sqrt(float x);</p>
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<p>用法:#include <math.h></p>
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<p>功能:计算x的平方根。</p>
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<p>说明:x应大于等于零。</p>
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举例:
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<pre><code class="language-c">
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// sqrt.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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clrscr(); // clear screen
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textmode(0x00); // 6 lines per LCD screen
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printf("sqrt(2000)=%f",sqrt(2000.0));
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getchar();
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return 0;
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}
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</code></pre>
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相关函数:无
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