char是所有类型中最短的 char多为8位，

 

https://en.wikipedia.org/wiki/C_data_types
In practice, char is usually eight bits in size and short is usually 16 bits in size (as are their unsigned counterparts).
char多为8位，
As char's size is always the minimum supported data type, no other data types (except bit-fields) can be smaller.
char是所有类型中最短的