Maths

what can be probable output

#include<stdio.h>

int main()

{

long double b=0.2,a=1.0,c;

c=a-b-b-b-b-b;

printf("%1.60Lf\n",c);

return 0;

}

certainly 0.0

The whole is greater than the sum of its parts^{Aristotle, Metaphysica}

we can assume this be true/false the correct answer calculated by computer is 5.551115e^-17