2.4.6 虚数的字面值 Imaginary literals

Imaginary literals are described by the following lexical definitions:

虚数的字面值可以用下面的词法定义描述:

imagnumber ::= (floatnumber | intpart) ("j" | "J")

An imaginary literal yields a complex number with a real part of 0.0. Complex numbers are represented as a pair of floating point numbers and have the same restrictions on their range. To create a complex number with a nonzero real part, add a floating point number to it, e.g., (3+4j). Some examples of imaginary literals:

虚数是实部为零的复数, 复数表达成一对有着相同取值范围的浮点数对.为了创建一个有着非零实部的复数,可以对它增加一个浮点数,例如,(3+4j). 下面是一些例子:

3.14j   10.j    10j     .001j   1e100j  3.14e-10j