Pointer Conversions

Pointers can be converted during assignment, initialization, comparison, and other expressions. This section describes the following pointer conversion: 

• Null pointers
  
  
• Pointers to type void
  
  
• Pointers to objects
  
  
• Pointers to functions
  
  
• Pointers to classes
  
  
• Expressions
  
  
• Pointers modified by const or volatile