A Collection of Code Snippets in as Many Programming Languages as Possible

This project is maintained by TheRenegadeCoder

Welcome to the Prime Number in Ruby page! Here, you'll find the source code for this program as well as a description of how the program works.

```
# check if input is a valid prime number or a valid composite number
# if number is 0, 1 or even, print composite
#
# begin validations for empty input, non-number and negative number
if ARGV.empty?
puts "Usage: please input a non-negative integer"
exit
else
begin
string1 = ARGV[0]
num = Integer(string1)
rescue ArgumentError
puts "Usage: please input a non-negative integer"
exit
end
if num < 0
puts "Usage: please input a non-negative integer"
exit
end
# end validations for empty input, non-number and negative number
# Begin Edge cases
if num == 0 || num == 1
print("composite")
elsif num == 2
print("prime")
elsif num % 2 == 0
print("composite")
# End Edge cases
else
# Logic
i = 3
is_prime = true
while i <= Math.sqrt(num)
if num % i == 0
is_prime = false
end
i += 2
end
if is_prime ==true
print("prime")
else
print("composite")
end
end
end
```

Prime Number in Ruby was written by:

- MSJ

If you see anything you'd like to change or update, please consider contributing.

No 'How to Implement the Solution' section available. Please consider contributing.

No 'How to Run the Solution' section available. Please consider contributing.