Course of Raku / Advanced / Subroutines / Signatures / Exercises

An optional exponent

Problem

Write a subroutine power with a required parameter $base and an optional parameter $exp. When the exponent is given, raise the base to it; when it is omitted, default to squaring (use the defined-or operator // to supply 2).

Call it once with just a base, and once with a base and an exponent.

Example

The program prints:

25
125

Solution

✅ See the solution

Course navigation

← Solution: Sum all arguments   |   Solution: An optional exponent →