Fun (a) fun (b);
This is a statement, mean function return value of b is fun. A type of yao

CodePudding user response:

This is not the C language,

CodePudding user response:

Post your context...

CodePudding user response:

The original poster is this natural language

C + + can be used in the
The decltype (a) () b ();

CodePudding user response:

reference levonsoft reply: 3/f

the building which is natural language

C + + can be used in the
The decltype (a) () b ();

Agree,
But the best like this:

 
The decltype ((a)) * b (); 

Return a pointer to a function rather than a function

CodePudding user response:

C + + 11 defines a reconstruction function, used to define the return type, fun b fun a is based on the input amount to return data type