“Type *Name"和“Type *Name"有什么区别?并输入*名称"? [英] What is the difference between "Type *Name" and Type* Name"?

问题描述

我是 C++ 的新手，我在任何地方都找不到将*"放在类型之后或名称之前的区别.比如waht就是两者的区别:

I am new to c++ and i couldn't find anywhere what is the difference between when you put the '*' after the type or before the name. For example waht is the difference between the two:

int *p;

int* p;

推荐答案

C 编译器忽略空格(字符常量和字符串字面量中的空格除外).

C compiler ignores the whitespace (except whitespace inside character constants and string literals).

意思是

int    * p;
int*p;
int* p;
int *p;
int        *                                p                      ;

意思完全一样.

空格仅在宏中很重要，例如:

The white space is only important in macros for example:

#define a(x) ((x)+(x))
#define a (x) ((x)+(x))

意味着完全不同的东西.

mean something completely different.

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