How to split a number into two at the decimal point in C?

Question

I'm trying to split a number in C into two at the decimal point. For example, let's say the number is 1.5, then I want to split it into 1 and 0.5. How can I do this?

Answer 1

You can use modf() from math.h library:

#include <stdio.h>
#include <math.h>

int main () {

   double value, fractional, integer;

   value = 8.123456;
   fractional = modf(value, &integer);

   printf("Integral part = %lf\n", integer);
   printf("Fraction Part = %lf \n", fractional);

   return(0);
}

Sample from tutorialspoint.com