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In the C++ programming language, a reference is a simple reference datatype that is less powerful but safer than the pointer type inherited from C. The name ''C++ reference'' may cause confusion, as in computer science a reference is a general concept datatype, with ''pointers'' and ''C++ references'' being specific reference datatype implementations. The definition of a reference in C++ is such that it does not need to exist. It can be implemented as a new name for an existing object (similar to rename keyword in Ada). == Syntax and terminology == The declaration of the form: where Examples: int A = 5;extern int& rB;Here, rA and rB are of type "reference to int"int& foo ();foo() is a function that returns a "reference to int"void bar (int& rP);bar() is a function with a reference parameter, which is a "reference to int"class MyClass ;MyClass is a class with a member which is reference to intint funcX() ; int (&xFunc)() = funcX;funcX() is a function that returns a (non-reference type) int and xFunc() is an ''alias'' for funcXconst int& ref = 65;const int& ref is a constant reference pointing to a piece of storage having value 65.Types which are of kind "reference to 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Reference (C++)」の詳細全文を読む スポンサード リンク
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