[Note]c++ coercion type conversion

1. Four parameters for coercion type conversion

• Static_cast
  For conversions between basic types
  cannot be used for the conversion of the base type pointer
  For conversions between class objects that have inheritance relationships and between class pointers
• Const_cast
  Read-only property for removing variables
  The cast target type must be a pointer and a reference
• Reinterpret_cast
  For casting between pointer types
  Used for casts between integers and pointer types
• dynamic_cast
  Conversions between class pointers that have an inheritance relationship
  For inter-pointer conversions with cross-correlation
  Has a class function check
  virtual function Support Required

[Note]c++ coercion type conversion