在阅读有关点人的教学时,我面临着类似守则。
const int *p;
以及
int const *p;
以及
int *const p;
其中的主要区别是什么?
虽然我指定了任何股本价值地址,例如,
int b=100;
b=&p;
i 正在出现错误。 这一点是什么? 谁能以身作解释?
在阅读有关点人的教学时,我面临着类似守则。
const int *p;
以及
int const *p;
以及
int *const p;
其中的主要区别是什么?
虽然我指定了任何股本价值地址,例如,
int b=100;
b=&p;
i 正在出现错误。 这一点是什么? 谁能以身作解释?
Most of the time, simply read it from right to left.
int const *p;
“p
is a pointer to a const
int <<>int
。
int *const p;
“p
is a const
pointer to an int
。
例外情形是<代码>const 是最关键词:
const int *p;
之后,它与:
int const *p;
如果点名为<代码>const,则您可修改其地址,但您可更改其指明的价值。 如果指出价值为<代码>const(如果是的话,int
),那么你可以修改点人所指出的内容(但你可以指出其他内容)。
与此无关的是,这未能编纂:
int b=100;
b=&p;
由于您将点码和可核实地址(int **
)重新定位为b
。 非法转换。 你可以用 cast子迫使它,但我不认为这是你想要的。
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