ruby – ”不能将Fixnum转换为String(TypeError)

我打了一个’不能将Fixnum转换成String(TypeError)’错误,而它似乎很简单,我不知道如何解决它.我认为我的逻辑是声音 – 将输入的字符串变量转换为整数,然后执行基本操作 – 但显然我缺少一些关键的信息.

puts 'what is your favourite number?'
favenum = gets.chomp
better = favenum.to_i + 1
puts 'Yeah '+favenum+' is nice enough but '+better+' is bigger and better by far! Think on.'

已经尝试寻找一个答案,但同样的错误的例子现在有超出我的基本的ruby技能.

puts 'Yeah ' + favenum.to_s + ' is nice enough but ' + better.to_s + ' is bigger and better by far!'

puts "Yeah #{favenum} is nice enough but #{Better} is bigger and better by far!"