本文翻译自：typedef struct vs struct definitions [duplicate]
This question already has an answer here: 这个问题已经在这里有了答案：
- Why should we typedef a struct so often in C? 为什么要在C语言中这么频繁地对结构进行typedef？ 15 answers 15个答案
I'm a beginner in C programming, but I was wondering what's the difference between using typedef when defining a structure versus not using typedef . 我是C编程的初学者，但我想知道在定义结构时使用typedef与不使用typedef什么区别。 It seems to me like there's really no difference, they accomplish the same goal. 在我看来，它们之间并没有什么区别，它们实现了相同的目标。
struct myStruct{
int one;
int two;
};
vs. 与
typedef struct{
int one;
int two;
}myStruct;
#1楼
参考：https://stackoom.com/question/71pn/typedef-struct-vs-struct-definitions-重复
#2楼
The following code creates an anonymous struct with the alias myStruct : 以下代码创建一个别名为myStruct的匿名结构：
typedef struct{
int one;
int two;
} myStruct;
You can't refer it without the alias because you don't specify an identifier for the structure. 没有别名，就不能引用它，因为您没有为结构指定标识符。
#3楼
The typedef , as it is with other constructs, is used to give a data type a new name. 与其他构造一样， typedef用于为数据类型赋予新名称。 In this case it is mostly done in order to make the code cleaner: 在这种情况下，通常是为了使代码更整洁：
struct myStruct blah;
vs. 与
myStruct blah;
#4楼
In C (not C++), you have to declare struct variables like: 在C（不是C ++）中，您必须声明结构变量，例如：
struct myStruct myVariable;
In order to be able to use myStruct myVariable; 为了能够使用myStruct myVariable; instead, you can typedef the struct: 相反，您可以typedef结构：
typedef struct myStruct someStruct;
someStruct myVariable;
You can combine struct definition and typedef s it in a single statement which declares an anonymous struct and typedef s it. 您可以将struct定义和typedef组合在一个声明匿名struct和typedef的语句中。
typedef struct { ... } myStruct;
#5楼
The difference comes in when you use the struct . 使用struct时会有所不同。
The first way you have to do: 您必须做的第一种方式：
struct myStruct aName;
The second way allows you to remove the keyword struct . 第二种方法允许您删除关键字struct 。
myStruct aName;
#6楼
If you use struct without typedef , you'll always have to write 如果使用不带typedef struct ，则始终必须编写
struct mystruct myvar;
It's illegal to write 写是非法的
mystruct myvar;
If you use the typedef you don't need the struct prefix anymore. 如果使用typedef ，则不再需要struct前缀。
