[作用域](%E4%BD%9C%E7%94%A8%E5%9F%9F.md) [静态变量](%E9%9D%99%E6%80%81%E5%8F%98%E9%87%8F.md) [extern修饰](extern%E4%BF%AE%E9%A5%B0.md) [作用域和生命周期](%E4%BD%9C%E7%94%A8%E5%9F%9F%E5%92%8C%E5%A3%B0%E6%98%8E%E5%91%A8%E6%9C%9F.md) [内存布局](%E5%86%85%E5%AD%98%E5%B8%83%E5%B1%80.md)