Comparing Same Float Values In C [duplicate]

Answer 1

Floating point numbers must not be compared with the "==" operator.

Instead of comparing float numbers with the "==" operator, you can use a function like this one :

 //compares if the float f1 is equal with f2 and returns 1 if true and 0 if false
 int compare_float(float f1, float f2)
 {
  float precision = 0.00001;
  if (((f1 - precision) < f2) && 
      ((f1 + precision) > f2))
   {
    return 1;
   }
  else
   {
    return 0;
   }
 }