When considered as unsigned numbers (在它们视作无符号数时) 。
1 may be either a signed number or an unsigned number depending on context 依上下文1可以是一个有号数或是一个无号数
Which represents a base 10 unsigned number , is prefixed with a negative sign ,它表示一个10为基的无符号数,前面带一个负号。
Which represents a non - base 10 unsigned number , is prefixed with a negative sign ,它表示一个非10为基的无符号数,前面带一个负号。
2 may be either a double - cell signed number or a double - cell unsigned number depending on context 依上下文2可以是一个双单元有号数或是一个双单元无号数
The storage unit for the character data type ( c @ , c ! , fill , etc . ) must be able to contain unsigned numbers from 0 through 255 一个实作不需要限制字元储存到这个?围,但是一个没有环境相依性的程式不能假定在一个字元位置储存在这个?围之外数目的能力