type definitely union
时间: 2024-06-14 19:09:11 浏览: 66
type definitely union 是 C 语言中的一个关键字,用于定义联合类型。联合类型是一种特殊的数据类型,它可以存储不同类型的数据,但同一时间只能存储其中的一种类型。
定义一个联合类型的语法如下:
```
union union_name {
type1 member1;
type2 member2;
...
};
```
其中,union_name 是联合类型的名称,type1、type2 等是不同的数据类型,member1、member2 等是联合类型的成员变量。
使用联合类型时,可以通过成员变量来访问其中存储的数据。但需要注意的是,由于联合类型只能同时存储一种类型的数据,因此在访问成员变量时需要确保当前存储的数据类型与要访问的成员变量类型匹配,否则可能会导致数据错误。
联合类型在某些场景下非常有用,例如当需要在不同的数据类型中共享同一块内存空间时,可以使用联合类型来实现。
相关问题
A Prometheus exporter for Oracle modeled after the MySQL exporter. I'm not a DBA or seasoned Go developer so PRs definitely welcomed.这句话什么意思
这句话说明了一个名为 Prometheus exporter for Oracle 的项目,该项目的目标是为 Oracle 数据库创建一个 Prometheus 的导出器,类似于 MySQL 导出器。该项目的作者可能不是一个专业的数据库管理员或有经验的 Go 开发者,因此他们欢迎其他开发者提交代码(PRs),以帮助改进和完善这个项目。
第一幕: 旁白: (male protagonist) No matter how complicated the outside world is, it has nothing to do with a broken heart. Pei Zhi: Chen Ning! Chen Ning: Huh? What's wrong? Pei Zhi: There’s a group event after class today . Chen Ning: I already know that and I will definitely go. Pei Zhi: Okay, let's go together. [Chen Ning glanced back at Lu Bai]: Lu Bai, will you go to next week's dinner? [glanced up at Chen Ning]: I’m not interested. Chen Ning: Why not go? Why don't you participate in all class activities? Lu Bai: I'm not interested. Chen Ning: I just hope you can contact us more... Lu Bai: No. 【Get up and leave】 Qu Yanting: Okay Chen Ning, he never goes to this kind of activity, don't persuade you. Narrator: [Lu Bai] I'm not rejecting her, I'm just rejecting the world.
Act 1:
Narrator: "No matter how complicated the outside world may seem, it has nothing to do with a broken heart."
Pei Zhi: "Chen Ning!"
Chen Ning: "Yes?"
Pei Zhi: "There's a group event after class today. Are you going?"
Chen Ning: "Of course, I'm definitely going."
Pei Zhi: "Great, let's go together."
[Chen Ning glances back at Lu Bai]
Chen Ning: "Lu Bai, will you come to the dinner next week?"
[Lu Bai looks up at Chen Ning]
Lu Bai: "I'm not interested."
Chen Ning: "Why not? Why don't you participate in any of the class activities?"
Lu Bai: "I'm just not interested."
Chen Ning: "I just hope you can hang out with us more."
Lu Bai: "No."
[Lu Bai gets up and leaves]
Qu Yanting: "It's okay Chen Ning. Lu Bai never goes to these kinds of activities. Don't try to persuade him."
Narrator: [Lu Bai] "I'm not rejecting her, I'm just rejecting the world."
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