产生 0.00 的百分比

Question

在我计算成绩的程序中，我需要找到在期末考试中获得某个成绩所需的百分比。 我计算了我的变量PNA，这是 A 所需的点数。 我做 900 - GSF （到目前为止是等级） 为了满分，我需要 50 分回来。

然后，我做我的变量PeNA，这是决赛所需的百分比。

所以我做了很多事情： PeNA = PNA / 150 和 PeNA = (900-GSF) / 150

两个结果都产生了 0.00%

我知道结果应该是 33.33% 但无济于事。

我的问题是如何格式化该 PeNA 变量和语句以返回所需的正确百分比。

我想我可能在这里的某个地方有逻辑错误。但我不确定出了什么问题。 一旦我弄清楚这个项目应该完成。

这是我的代码。

  Sub Main()
    Dim TG1 As Integer = -1
    While TG1 < 0 Or TG1 > 200
        Console.WriteLine("Please enter your grade for project #1 <0-200>: ")
        TG1 = Console.ReadLine()
    End While

    Dim TG2 As Integer = -1
    While TG2 < 0 Or TG2 > 200
        Console.WriteLine("Please enter your grade for project #2 <0-200>: ")
        TG2 = Console.ReadLine()
    End While

    Dim TG3 As Integer = -1
    While TG3 < 0 Or TG3 > 200
        Console.WriteLine("Please enter your grade for project #3 <0-200>: ")
        TG3 = Console.ReadLine()
    End While

    Dim MT1 As Integer = -1
    While MT1 < 0 Or MT1 > 150
        Console.WriteLine("Please enter your grade on the midterm <0-150>: ")
        MT1 = Console.ReadLine()
    End While

    Dim AB1 As Integer = -1
    While AB1 < 0 Or AB1 > 30
        Console.WriteLine("Please enter how much you were absent   <0-30>: ")
        AB1 = Console.ReadLine()
    End While

    Dim AB2 As Integer
    If AB1 <= 2 Then AB2 = 100
    If AB1 > 2 AndAlso AB1 < 8 Then AB2 = 100 - ((AB1 - 2) * 20)
    If AB1 > 7 Then AB2 = 0

    Dim GSF As Integer
    GSF = TG1 + TG2 + TG3 + MT1 + AB2

    Dim PNA As Integer
    PNA = 900 - GSF

    Dim PeNA As Integer
    PeNA = (900 - GSF) / 150



    Console.WriteLine("------------------------------------------------")
    Console.WriteLine("--GRADE SUMMARY--")
    Console.WriteLine("Project #1    : {0}", TG1)
    Console.WriteLine("Project #2    : {0}", TG2)
    Console.WriteLine("Project #3    : {0}", TG3)
    Console.WriteLine("Midterm Exam  : {0}", MT1)
    Console.WriteLine("Participation : {0}", AB2)
    Console.WriteLine("-------------------------------------------------")
    Console.WriteLine("Total grade so far: {0}", GSF)
    Console.WriteLine("")
    Console.WriteLine("{0} {1} {2}", "Desired grade".PadRight(20), "Points needed".PadRight(20), "Percentage needed on final")
    Console.WriteLine("{0} {1} {2}", "A".PadRight(20), PNA.ToString.PadRight(20), FormatPercent(PeNA).ToString.PadRight(20))


    'A - 900-1000
    'B - 800-899
    'C - 700-799
    'D - 600-699

Answer 1

Dim PNA As Integer
PNA = 900 - GSF

Dim PeNA As Integer
PeNA = (900 - GSF) / 150

如果你想存储分数，PeNA 应该声明为 SINGLE、DOUBLE 或 DECIMAL