本文介绍了const int = int const?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
例如,是
int const x = 3;
有效的代码?
它的含义与
const int x = 3;
?
推荐答案
它们都是有效的代码,它们都是等效的。对于指针类型,虽然它们都是有效的代码,但不是等价的。
They are both valid code and they are both equivalent. For a pointer type though they are both valid code but not equivalent.
声明两个常量的int:
Declares 2 ints which are constant:
int const x1 = 3;
const int x2 = 3;
声明一个指针,其数据不能通过指针改变:
Declares a pointer whose data cannot be changed through the pointer:
const int *p = &someInt;
声明不能更改为指向其他对象的指针:
Declares a pointer who cannot be changed to point to something else:
int * const p = &someInt;
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