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我正在爲大學項目編寫一個基於控制檯的計算器應用程序,並且遇到了一些錯誤。F#添加到可變列表
當用戶從菜單(1,2,3,4等)中選擇一個選項時,他們可以輸入2個數字並加上,減去,除或乘以總和。每個成功的總和解決並顯示後,我希望他們被添加到我的名單sumHistory
。
這是我的代碼目前,我覺得它應該工作,但我顯然遇到了一些小而愚蠢的事情,以防止列表顯示時被告知!
let sumHistory = new List<string>()
match input with
|"1" -> Console.WriteLine("Please enter 2 integers: ")
let a= Console.ReadLine()
let b= Console.ReadLine()
let A: int = int32 a
let B: int = int32 b
let C = (add A B)
let D = (string A + " + " + string B + " = " + string C)
Console.WriteLine(D)
sumHistory.Add(D)
|"2" -> Console.WriteLine("Please enter 2 integers: ")
let a= Console.ReadLine()
let b= Console.ReadLine()
let A: int = int32 a
let B: int = int32 b
let C = (sub A B)
let D = (string A + " - " + string B + " = " + string C)
Console.WriteLine(D)
sumHistory.Add(D)
|"3" -> Console.WriteLine("Please enter 2 integers: ")
let a= Console.ReadLine()
let b= Console.ReadLine()
let A: int = int32 a
let B: int = int32 b
let C = (div A B)
let D = (string A + "/" + string B + " = " + string C)
Console.WriteLine(D)
sumHistory.Add(D)
|"4" -> Console.WriteLine("Please enter 2 integers: ")
let a= Console.ReadLine()
let b= Console.ReadLine()
let A: int = int32 a
let B: int = int32 b
let C = (mul A B)
let D = (string A + " * " + string B + " = " + string C)
Console.WriteLine(D)
sumHistory.Add(D)
|"5" -> sumHistory |> Seq.iteri (fun index item -> printfn "%i: %s" index sumHistory.[index])
|"6" -> let data = ReadInText()
data.Read()
重構項目和應用良好的SE原則是一個標記的整體另一大塊,我只是試圖讓事情在這一刻工作@FyodorSoikin :) – Alex