C++ 变量类型《第一张》

整数类型（Integer Types）：

• int：用于表示整数，通常占用4个字节。
• short：用于表示短整数，通常占用2个字节。
• long：用于表示长整数，通常占用4个字节。
• long long：用于表示更长的整数，通常占用8个字节。

浮点类型（Floating-Point Types）：

• float：用于表示单精度浮点数，通常占用4个字节。
• double：用于表示双精度浮点数，通常占用8个字节。
• long double：用于表示更高精度的浮点数，占用字节数可以根据实现而变化。

字符类型（Character Types）：

• char：用于表示字符，通常占用1个字节。
• wchar_t：用于表示宽字符，通常占用2或4个字节。
• char16_t：用于表示16位Unicode字符，占用2个字节。
• char32_t：用于表示32位Unicode字符，占用4个字节。

布尔类型（Boolean Type）：

• bool：用于表示布尔值，只能取true或false。

枚举类型（Enumeration Types）：

• enum：用于定义一组命名的整数常量。

指针类型（Pointer Types）：

• type*：用于表示指向类型为type的对象的指针。

数组类型（Array Types）：

• type[]或type[size]：用于表示具有相同类型的元素组成的数组。

结构体类型（Structure Types）：

• struct：用于定义包含多个不同类型成员的结构。

类类型（Class Types）：

• class：用于定义具有属性和方法的自定义类型。

共用体类型（Union Types）：

• union：用于定义一种特殊的数据类型，它可以在相同的内存位置存储不同的数据类型。
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