Corrected Floating Point machine epsilon calculation

begin.c

#include <stdio.h>

int main(void)
{
  float foo;
  double bar;

  foo = (float)((float)(7.0f/3.0f) - (float)(4.0f/3.0f) - 1.0f);
  bar = (double)((double)(7.0/3.0) - (double)(4.0/3.0) - 1.0);

  printf("\nM.E. for float: %e \n\n", foo);
  printf("M.E. for double: %e \n\n", bar);

  return 0;
}