[变量](%E5%8F%98%E9%87%8F.md) [常量](%E5%B8%B8%E9%87%8F.md) [基本类型](%E5%9F%BA%E6%9C%AC%E7%B1%BB%E5%9E%8B.md) [引用类型](%E5%BC%95%E7%94%A8%E7%B1%BB%E5%9E%8B.md) [指针](%E6%8C%87%E9%92%88.md) [自定义类型](%E8%87%AA%E5%AE%9A%E4%B9%89%E7%B1%BB%E5%9E%8B.md) [数据转换](%E6%95%B0%E6%8D%AE%E8%BD%AC%E6%8D%A2.md)