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Ruby

Patrick Shushereba
Patrick Shushereba
10,911 Points
Posted by Patrick Shushereba
Patrick Shushereba
10,911 Points

Sum Program

I'm trying to write a program that will sum numbers up to the input number n. I've been able to push the numbers into an array, but I haven't been able to successfully sum the numbers up. I tried to use the inject method, but it's not giving me any response.

Here's what I have so far:

print "Enter a number to sum up to:"
n = gets.chomp.to_i

num_array = []

i = 1
while i <= n
num_array.push(i)
i += 1
end

num_array.inject(:+)
puts num_array

1 Answer

Charles Lee
Charles Lee
17,825 Points

You were so close!

Right now you're printing out the num_array which is the array you're building.

You should try printing the num_array.inject(:+) and you'll find that you're getting the sum correctly.

Patrick Shushereba
Patrick Shushereba
10,911 Points
Patrick Shushereba
Patrick Shushereba
10,911 Points

Thanks a lot! I can't believe it was that simple. Honestly I'm just happy I got it working. It's hard being new to programming.