?? modf.html
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<pre>
原型：extern float modf(float num, float *i);
用法：#include <math.h>
功能：將浮點(diǎn)數(shù)num分解成整數(shù)部分和小數(shù)部分。
說明：返回小數(shù)部分，將整數(shù)部分存入*i所指內(nèi)存中。
舉例：
// modf.c
#include <syslib.h>
#include <math.h>
main()
{
float x, i;
clrscr(); // clear screen
textmode(0x00); // 6 lines per LCD screen
x=modf(-74.12,&i);
printf("-74.12=%.0f+(%.2f)",i,x);
getchar();
return 0;
}
相關(guān)函數(shù)：<a href="frexp.html">frexp</a>,<a href="ldexp.html">ldexp</a>
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