uTools-Manuals/docs/c/sqrt.html
2019-04-21 11:50:48 +08:00

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