The following conversions are classified as implicit conversions:

• Identity conversions
• Implicit numeric conversions
• Implicit enumeration conversions.
• Implicit reference conversions
• Boxing conversions
• Implicit constant expression conversions
• User-defined implicit conversions

Implicit conversions can occur in a variety of situations, including function member invocations (14.4.3), cast expressions (14.6.6), and assignments (14.13).

The pre-defined implicit conversions always succeed and never cause exceptions to be thrown. [Note: Properly designed user-defined implicit conversions should exhibit these characteristics as well. end note]

In This Section:

• 13.1.1: Identity conversion
• 13.1.2: Implicit numeric conversions
• 13.1.3: Implicit enumeration conversions
• 13.1.4: Implicit reference conversions
• 13.1.5: Boxing conversions
• 13.1.6: Implicit constant expression conversions
• 13.1.7: User-defined implicit conversions