c++ - Why is my vector subscript out of range? -

Place this error in "Vector Subscript Out of range". I'm sure this is due to this part of my code. Somebody can see what I'm doing wrong

  bool set :: remove (SET_ELEMENT_TYPE removalCandidate) {int subscript = positionOf (removeCandidate); While ((subscript & lt; my_size) & amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; (my_element [subscript]] = RemovalCandidate) {subscript ++; } If (subscript = -1) returns {if (subscript == my_size); And {while (subscript & lt; my_size) {my_element [subscript] = my_element [subscript + 1]; Subscript ++; } my size--; Back true; } return false; } Return 0; }    
 
 
 You assign  -1  to  subscript  In this  condition:  
  if (subscript = -1)   
 this code is intended to be clear is not.  
 You will be able to access this loop beyond your vector limit when the first access to  subscript  is when it is  -1, , and at the end of the loop  subscript  is equal to  my_size - 1 .  
  while (subscript & lt; my_size) {my_element [subscript] = my_element [subscript + 1]; Subscript ++; }   
 This is because  my_element [-1]  is behind the first element, and  my_element [my_size]  reading a past You can change your test of the last element of your vector:  
  while (subscript + 1 my_size) {// ...   
 It finally fixes out of range  while  loop, but you should decide to not assign  if  condition to  subscript .