How cast C++ class to intrinsic type

Question

Basic C++ class question:

I have simple code currently that looks like something like this:

typedef int sType;
int array[100];

int test(sType s)
{
          


        

Answer 1

class sType
{
  public:
    operator int() const
    {
      return val;
    }
    int val;
};

To make s = 5 work, provide a constructor that takes an int:

class sType
{
  public:

    sType (int n ) : val( n ) {
    }

    operator int() const
    {
      return val;
    }
    int val;
};

The compiler will then use that constructor whenever it need to convert an sType to an int.