(C++) Constructor

class Example
{
  public:
  Example() //Constructor #1
  {
    mValue = 0;
  }
  Example(const int& value) //Constructor #2
    : mValue(value); 
  {
    //Empty, as mValue is already set to value
  }
  int mValue;
};
int main(int argc, char* argv[])
{
  Example e1;     //Calls constructor #1
  Example e2(10); //Calls constructor #2
  Example * pe1 = new Example;     //Calls constructor #1
  Example * pe2 = new Example(10); //Calls constructor #2
  delete pe1; //Calls destructor
  delete pe2; //Calls destructor
}