When a method returns an array reference, you include with the return type in the method header.
a.
( )
b.
[ ]
c.
< >
d.
{ }

b. []

Explanation:

Arrays are represented using [] . When a method returns an array reference, the method header contains an entry of the type <data-type>[].

For example, a method test which returns a reference to integer array and takes no parameters is of the form:

int[] test();

Similarly a method list_chars which takes a String as an argument and returns an array of chars has the form:

char[] list_chars(String s);

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