当我尝试使用if语句分配值将值分配给变量时，使用未分配的变量错误

Question

我正在用Windows表单编写一个程序，该程序试图使用if语句将值分配给变量，这取决于单击表单中的哪些radiobuttons。我在以下行中以粗体以“使用无分配变量”的错误。问题是 totalweeks 显然没有被分配，但是我在上面的if语句中为其分配了一个值。谁能提出一个可能的修复或想法来试图解决问题？

private void button1_Click(object sender, EventArgs e)
{
    //Assigning variables
    int WeeklyRate; //To assign integer values for "WeeklyRate" for future calculation use. If Radio button clicked it has value of radio button etc. 
    if (radioButton1.Checked)
    {
        WeeklyRate = 10;
    }
    else if (radioButton2.Checked)
    {
        WeeklyRate = 15;
    }
    else if (radioButton3.Checked)
    {
        WeeklyRate = 20;
    }

    int TotalWeeks;//assign values to total weeks based on number of months selected, to use in calculations for total cost.
    if (radioButton4.Checked)
    {
        TotalWeeks = 12;
    }
    else if (radioButton5.Checked)
    {
        TotalWeeks = 52;
    }
    else if (radioButton6.Checked)
    {
        TotalWeeks = 104;
    }

    int Payments;//assigning the amount of payments based on frequency radiobutton selected. 
    if (radioButton7.Checked)
    {
        **Payments = TotalWeeks;**
    }
    else if (radioButton8.Checked)
    {
        **Payments = TotalWeeks / 4;**
    }
}
}
}

Answer 1

当 radiobutton4 > radiobutton5 ， radiobutton6 均未被检查时，您不能将其除以4

。变量

int TotalWeeks = 0;

（结果：<代码>付款在未检查radiobuttons时将为0）

---

或在初始化时

int? TotalWeeks = null;

，在分配付款金额时

if (radioButton7.Checked && TotalWeeks is not null)
{
    Payments = TotalWeeks;
}
else if (radioButton8.Checked && TotalWeeks is not null)
{
    Payments = TotalWeeks / 4;
}

（结果：现在：现在付款变量，都没有分配，无分配当没有检查radiobuttons时）

编辑：谢谢 gserg ，我忘记了之后，我忘了？ > int 使其无效