C Tutorial/math.h/modf

modf

Item Value Header file math.h Declaratin float modff(float num, float *i);double modf(double num, double *i);long double modfl(long double num, long double *i); Function decomposes num into its integer and fractional parts. Return returns the fractional portion and place the integer part in the variable pointed to by i.

<source lang="cpp">#include <math.h>

 #include <stdio.h>
 int main(void)
 {
    double i;
    double f;
    f = modf(10.123, &i);
    printf("%f %f",i , f);
 }</source>