Just trying to write a simple Ruby program here. I'm trying to get the program to ask for the user's favorite number and then suggest a new favorite number that's one greater. What's wrong with the code below?
puts "hey, whats your favorite number?"
favnumber = gets.chomp
newfavnumber = favnumber.to_i + 1
puts "how about " + newfavnumber "?"
puts "how about " + newfavnumber "?"
First of all, you probably wanted a + before the "?" there. The way this is written now, it parses as puts("how about " + newfavnumber("?")), i.e. you're calling a function called newfavnumber, which is obviously not what you want.
However if you change it to puts "how about " + newfavnumber + "?", which you presumably intended, it still won't work: newfavnumber is a number and "how about " is a string. In ruby you can't add numbers to strings. To fix this you can call to_s on newfavnumber to convert it to a string.
A better way to write this would be using string interpolation: puts "how about #{newfavnumber}?". This way you don't need to call to_s because you can use any type inside #{}.
puts "#{firstname} #{lastname}"" ") between the two strings. What #{} does is it evaluates the expression inside the braces and inserts the result in the string.You're missing a + after newfavnumber and a conversion to string.
puts "how about " + newfavnumber.to_s + "?"
