Ruby-Code

=begin
 T.y.P. #162 by Lars I.
 Approach to PI
 Lines of code   14
=end

def add(sum,numerator,denominator)
    return sum + (numerator/denominator)
end

def get_num_denom()
    sum = 0.0
    for i in 1..(10**7)
        num = ((-1)**(i+1)).to_f
        denom = (2*i - 1).to_f
        sum = add(sum,num,denom)
    end
    
    puts "The sum is #{4 * sum}"
    puts "Math::PI:  #{Math::PI}"
end

get_num_denom