(C++) Method

class Example
{
  public:
  void setX(const int& x)
  {
    mX = x;
  }
  int getX() const
  {
    return mX;
  }
  private:
  int mX;
};

Guideline from [1]

The standard requires that operators = () [] and -> must be methods. 
For all other functions:
IF the function is operator>> or operator<< for File I/O,
OR IF it needs type conversions on its leftmost argument,
OR IF it can be implemented using the class's public interface alone,
  Make it a non-member (and friend in the first two cases).
    IF it needs to behave virtually, 
      add a virtual member function to provide the virtual behaviour 
      and implement it in terms of that.
ELSE make it a member

Code links

• class
• const
• int
• private
• public
• return
• void

References

• 1) Herb Sutter. Exceptional C++. ISBN: 0-201-61562-2. Item 20: Class mechanics.