说明：  数据类型：基本数据类型（包括常量和变量），构造数据类型（包括数组类型，结构类型，联合类型），指针类型，空类型（其类型说明符为void）四大类。 整形量包括:整形常量，整型变量。整形常量就是整常熟。使用的整常数有八进制，十进制，十六进制三种。
(Data types: basic data types (including constants and variables), structural data types (including array type, structure type, joint type), pointer type, air type (its type specifier for the void) four main categories. Plastic volume include: plastic constants, integer variables. Changshu is constant throughout the plastic. Constants are used throughout the octal, decimal, hexadecimal three.)