https://www.youtube.com/watch?v=2h2hdRqRIRk

Auto type conversion

Implicit/auto conversions: compiler auto converts from 1 type to another without developers explicitly doing so:

• implicit type conversion, e.g. int i = f; (where f is a float)
• arithmetic type conversions, e.g. between int32_t and int64_t
• sign conversions
• user defined conversions (e.g. implementing “operator int()” in structs)

It creates a temp object from the input…

Explicit type conversion

Casts are explicit type conversion.

C-style cast

(<type>)<var>

Under the hood, C++ compiler implements C-style cast by attempt the following casts sequentially until first success:

1. const_cast
2. static_cast
3. static_cast followed by const_cast
4. reinterpret_cast (no copy!)
5. reinterpret_cast followed by const_cast

Function pointers