Year + future not adding

Hi, Aaron Endsley

There're couple of problems here.

1. You noticed that the program's output broke into more numbers of lines than it needs to be? That's because the use of gets to accept user's input would always insert a newline character at the end, this is an undesirable side-effect. gets.chomp is better suited for such case, as it removed the tailing newline character.
2. Now to answer the question you asked why year + future not working?. That's because these 2 variables were assigned by user's input; it's important to remember that, even though you might think you have entered a number, the result of get or get.chomp always stored in the variable as String, in the case of your code, they are "2015" and "20". By performing addition operation on 2 Strings, Ruby would just combine them together into one big String. To get the true mathematical addition, you may first convert these 2 variable into integer using the to_i method.

print "What year is it: "
year=gets.chomp               # use get.chomp here instead of gets
print "Enter future years : "
future=gets.chomp             # use get.chomp here instead of gets
name="Aaron"
string="My name is #{name}"
puts string
puts "the year is #{year}"
puts "In #{future} years it will be #{year.to_i + future.to_i}"


#=> What year is it: 2015
#=> Enter future years : 20
#=> My name is Aaron
#=> the year is 2015
#=> In 20 years it will be 2035

Hope it helps