Ruby program to check the given number is an odd number using library function

num1 = 20
num2 = 3

if num1.odd?()
    print "num1 is an odd number\n";
else
    print "num1 is an even number\n";
end

if num2.odd?()
    print "num2 is an odd number\n";
else
    print "num2 is an even number\n";
end

Output:

num1 is an even number
num2 is an odd number