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Write the declaration of a function to return the reference of the array, and the array contains 10 string objects (notes)

2022-04-23 05:27:00 【What’smean】

1.string( &func( ))[10];

The meaning of the above statement is : func () Represents a call to func Function does not need any arguments ,(&func( ) ) Indicates that the return result of the function is a reference ,( &func( ))[10] Indicates that the referenced object is a dimension of 10 Array of ,string (&func( )) [10] The element representing the array is string object .

2. Use type aliases

typedef string arr [10];

arr& func( );

3. Use tail return type

auto func( ) ->string(&)[10];

4. Use decltype keyword

string str [10];

decltype (str) &func( );

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