windows窗体中的C++if语句[关闭]

我正在制作一个程序,告诉你你的星座。我有两个文本框,分别表示日和月,一个按钮和一个richtextbox用于输出。我无法让if语句工作,richtextbox为每个输入显示相同的内容。例如,它说摩羯座,即使一天是5月7日。那么,如何使if语句生效呢? 我不熟悉C++Windows窗体和visual studio,我知道这是一个无用的程序,我只是想知道这些东西是如何工作的。

private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e)
{
    String ^ input = textBox2->Text;
    String^inputday = textBox1->Text;
    int luna; int day;
    luna = Convert::ToInt32(input);
    day = Convert::ToInt32(inputday);
    {if (luna == 1 && day < 20)

    {
        richTextBox1->Text = "Your sign is Capricorn ";
    }
    else { richTextBox1->Text = "Your sign is Aquarius"; }}


    {   if (luna == 2 && day < 19) { richTextBox1->Text = "Your sign is Aquarius"; }
    else { richTextBox1->Text = "Your sign is Pisces"; }}


    if (luna == 3 && day < 21) { richTextBox1->Text = "Your sign is Pisces"; }
    else { richTextBox1->Text = "Your sign is Aries"; }

    if (luna == 4 && day < 21) { richTextBox1->Text = "Your sign is Aries"; }
    else {
        richTextBox1->Text = "Your sign is Taurus";
    }
    if (luna == 5 && day < 22) { richTextBox1->Text = "Your sign is Taurus"; }
    else {
        richTextBox1->Text = "Your sign is Gemeni";
    }

    if (luna == 6 && day < 22) {
        richTextBox1->Text = "Your sign is Gemeni";
    }
    else { richTextBox1->Text = "Your sign is Cancer"; }

    if (luna == 7 && day < 22) {
        richTextBox1->Text = "Your sign is Cancer";
    }
    else {
        richTextBox1->Text = "Your sign is Leo";
    }

    if (luna == 8 && day < 23) {
        richTextBox1->Text = "Your sign is Leo";
    }
    else {
        richTextBox1->Text = "Your sign is Virgo";
    }

    if (luna == 9 && day < 23) {
        richTextBox1->Text = "Your sign is Virgo";
    }
    else {
        richTextBox1->Text = "Your sign is Libra";
    }

    if (luna == 10 && day < 23) {
        richTextBox1->Text = "Your sign is Libra";
    }
    else { richTextBox1->Text = "Your sign is Scorpio"; }

    if (luna == 11 && day < 22) {
        richTextBox1->Text = "Your sign is Scorpio";
    }
    else {
        richTextBox1->Text = "Your sign is Sagittarius";
    }
    if (luna == 12 && day < 22) {
        richTextBox1->Text = "Your sign is Sagittarius";
    }
    else {
        richTextBox1->Text = "Your sign is Capricorn";
    }