Question

Example:

int main() 
{
  typedef int Oranges;
  typedef int Apples;

 /* ... a lot of other code */

  Oranges not_apples = 10;
  Apples apples = not_apples; // ??? confusing
}

Question: Can we forbid implicit casting for variables which were declared via typedefs?

Answer 1

typedef actually only creates an alias to a base type, so both types you created are actually just aliases to int. What you’re looking for is boost::strong_typedef.