The Argument Declaration List

The argument-declaration-list portion of a function declaration:

• Allows the compiler to check type consistency among the arguments the function requires and the arguments supplied in the call.
  
  
• Enables conversions, either implicit or user-defined, to be performed from the supplied argument type to the required argument type.
  
  
• Checks initializations of, or assignments to, pointers to functions.
  
  
• Checks initializations of, or assignments to, references to functions.