?? floor.html
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請(qǐng)選定要查看的函數(shù)
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<li><a href="abs.html">abs</a></li>
<li><a href="acos.html">acos</a></li>
<li><a href="asin.html">asin</a></li>
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<li><a href="floor.html">floor</a></li>
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<li><a href="fmod.html">fmod</a></li>
<li><a href="frexp.html">frexp</a></li>
<li><a href="hypot.html">hypot</a></li>
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<li><a href="sin.html">sin</a></li>
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<li><a href="tanh.html">tanh</a></li>
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<td>目前共有25個(gè)函數(shù)</td>
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<pre>
原型：extern float floor(float x);
用法：#include <math.h>
功能：求不大于x的最達(dá)整數(shù)
說(shuō)明：返回x的下限，如74.12的下限為74，-74.12的下限為-75。返回值為float類型。
舉例：
// floor.c
#include <syslib.h>
#include <math.h>
main()
{
float x;
clrscr(); // clear screen
textmode(0x00); // 6 lines per LCD screen
x=74.12;
printf("floor(%.2f)=%.0f\n",x,floor(x));
x=-74.12;
printf("floor(%.2f)=%.0f\n",x,floor(x));
getchar();
return 0;
}
相關(guān)函數(shù)：<a href="ceil.html">ceil</a>
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