引用指针 [英] Reference to a pointer
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问题描述
char *str = "Hello";
char *ptr = str;
char *&rptr = str;
ptr和rptr之间有什么区别？我理解rptr是一个指针的参考（在理论上），但它是如何与ptr实现不同的？
What is the difference between ptr and rptr? I understand rptr is a reference to a pointer(in theory) but how does it differ in terms of implementation with ptr?
C ++中的引用是否使用指针实现？ p>
Are references in C++ implemented using pointers?
推荐答案
ptr和rptr之间有什么区别？
What is the difference between ptr and rptr?
如果你 char * world =World; rptr = world; 然后打印 str ，它将打印World。如果你做 ptr = world; 然后打印 str ，它将打印Hello。
If you do char *world = "World"; rptr = world; and then print str, it will print "World". If you do ptr = world; and then print str, it will print "Hello".
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