我已经编写了一个基本的计算程序。该程序对于某些输入运行良好,而对于其他输入则给出 TypeError。我无法弄清楚这种不可预测的行为背后的原因。这是我的代码 -
class Conversion
I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000
result = 0
puts "enter the string"
input = gets.chomp.upcase
temp = input.split(//)
for i in temp do
case i
when 'M'
result = result + M
when 'D'
result = result + D
when 'C'
result = result + C
when 'L'
result = result + L
when 'X'
result = result + X
when 'V'
result = result + V
when 'I'
result = result + I
end
end
puts result
end
错误日志如下 -
assignment1.rb:22:in
+': Array can't be coerced into Fixnum (TypeError) from assignment1.rb:22:in
block in ' from assignment1.rb:7:ineach' from assignment1.rb:7:in
' from assignment1.rb:1:in `'
现在,当我提供 mxcd、dcm、lxv 等输入时,它工作正常。但对于像 xvi、ivx、icd 这样的输入,它会给出 TypeError。
需要帮助。提前致谢。
最佳答案
I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000
被解释为
I = ( 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000)
结果
I = [1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000]
用逗号替换分号。
关于ruby - 数组无法强制转换为 Fixnum(类型错误),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30126659/