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  • modf()函数

    函数名: modf   
    功 能: 把数分为整数和小数 (The modf function breaks down the floating-point value x into fractional and integer parts, each of which has the same sign as x. The signed fractional portion of x is returned. The integer portion is stored as a floating-point value at intptr.   )   
    用 法: double modf(double x, double *intptr);   
    程序例:   
    #include <math.h>   
    #include <stdio.h>   
    int main(void)   
    {   
       double fraction, integer;   
       double number = 100000.567;   
       fraction = modf(number, &integer);   
       printf("The whole and fractional parts of %lf are %lf and %lf\n",number, integer, fraction);   
        return 0;   
    }
    结果:
    The whole and fractional parts of 100000.567 are 100000.000 and 0.567
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  • 原文地址:https://www.cnblogs.com/eagleking0318/p/6521301.html
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