text: I need some help on this ASAP as the program is due at 11:00pm.
  I have one error left, but I have a feeling once it's fixed I'm going to have several more. That would be my luck.
  The error is the title for this problem: declaration of 'OPairType::OPairType(int, int)' outside of class is not definition -fpermissive
  Here is my full code:
  Header File:
  class OPairType{
  private:
  int x;
  int y;
  public:
  OPairType (int=0, int=0);
  int getX() const;
  int getY() const;
  void setX(int);
  void setY(int);
  void setValues(int, int);
  friend OPairType operator + (OPairType, OPairType);
  friend OPairType operator - (OPairType, OPairType);
  friend bool operator == (OPairType, OPairType);
  friend bool operator != (OPairType, OPairType);
  friend std::ostream& operator << (std::ostream&, OPairType);
  And here is the .cpp code:
  #include "OPairType.h"
  #include <iostream>
  OPairType::OPairType (int x, int y); //error occurs here
  int OPairType::getX() const {
  return x;
  }
  int OPairType::getY() const {
  return y;
  }
  void OPairType::setX(int new_x) {
  x = new_x;
  }
  void OPairType::setY(int new_y) {
  y = new_y;
  }
  void OPairType::setValues (int new_x, int new_y){
  x = new_x;
  y = new_y;
  }
  OPairType operator + (OPairType lh, OPairType rh){
  OPairType answer;
  answer.x = lh.x + rh.x;
  answer.y = lh.y + rh.y;
  return answer;
  }
  OPairType operator - (OPairType lh, OPairType rh){
  OPairType answer;
  answer.x = lh.x - rh.x;
  answer.y = lh.y - rh.y;
  return answer;
  }
  bool operator == (OPairType lh, OPairType rh){
  return lh.x == rh.x && lh.y == rh.y;
  }
  bool operator != (OPairType lh, OPairType rh){
  return !(lh.x == rh.x && lh.y == rh.y);
  }
  std::ostream& operator << (std::ostream& out, OPairType c){
  out << "(" << c.x << ", " << c.y << ")";
  return out;
  }
  Any responses at all will be appreciated. Just be fast is all I ask