#include <math.h>
double modf( double num, double *i );
函数将参数 num 分割为整数和小数,返回小数部分并将整数部分赋给 i。
#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; }
输出结果:
The whole and fractional parts of 100000.567000 are 100000.000000 and 0.567000