C ++：指针Vs引用 [英] C++: pointers Vs references
问题描述
有人可以提供关于指针与引用之间差异的简短陈述（b）。
的图形表示（通过链接？）也将非常受欢迎。
WD
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Hi,
Can someone provide a short and concise statement(s) on the difference
between pointers and references. A graphical representation (via links?) of
both would be much appreciated as well.
WD
---
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推荐答案
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<有人可以提供关于指针和引用之间差异的简短陈述。
指针是一个对象，包含另一个对象的内存中的地址; a
引用是另一个对象的别名。
指针可以为null;引用不能。
指针可以重新就位（即指向不同的对象）; a
引用不能。
当创建
时，必须初始化引用（即指定其引用）;指针可以是未初始化的。
的图形表示（通过链接？）也将非常受欢迎。
Hi,
Can someone provide a short and concise statement(s) on the difference
between pointers and references.
A pointer is an object containing the address in memory of another object; a
reference is an alias for another object.
A pointer can be null; a reference cannot.
A pointer can be re-seated (i.e., pointed at a different object); a
reference cannot.
A reference must be initialized (i.e., its refer-ee specified) when it is
created; a pointer can be uninitialized.
A graphical representation (via links?) of
both would be much appreciated as well.
我不确定会是什么样子。无论如何，我无法提供。
DW
I''m not sure what one would look like. Anyway, I am unable to provide one.
DW
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可以有人提供关于指针和引用之间差异的简短陈述。
指针是包含另一个对象的内存中的地址的对象;
Hi,
Can someone provide a short and concise statement(s) on the difference
between pointers and references.
A pointer is an object containing the address in memory of another object;
a reference是另一个对象的别名。
指针可以为null;引用不能。
指针可以重新就位（即指向不同的对象）;
引用不能。
引用必须在创建时初始化（即指定其引用）;一个指针可以是未初始化的。
a reference is an alias for another object.
A pointer can be null; a reference cannot.
A pointer can be re-seated (i.e., pointed at a different object); a
reference cannot.
A reference must be initialized (i.e., its refer-ee specified) when it is
created; a pointer can be uninitialized.
另外一个指针在语法上更方便，你怎么写一个
赋值运算符或复制构造函数而不使用引用？
john
Also a pointer is syntactically more convenient, how would you write an
assignment operator or copy constructor without using references?
john
>
另外一个指针在语法上更方便，怎么会你在不使用引用的情况下编写了一个
赋值运算符或复制构造函数？
Also a pointer is syntactically more convenient, how would you write an
assignment operator or copy constructor without using references?
我的意思是参考在语法上更方便，当然。
john
I mean a REFERENCE is syntactically more convenient, of course.
john
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