1 files changed, 134 insertions, 0 deletions
diff --git a/temps/temperatures/frm_main.cs b/temps/temperatures/frm_main.cs
new file mode 100644
index 0000000..bebd44d
--- /dev/null
+++ b/temps/temperatures/frm_main.cs
@@ -0,0 +1,134 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace temperatures
+{
+	public partial class frm_main : Form
+	{
+		public frm_main()
+		{
+			InitializeComponent();
+		}
+
+		/* 3 lists used to store temperatures from different cities,
+		 * those cities being Sioux Falls, New York, and Denver
+		 */
+		List<int> sf = new List<int>(30);
+		List<int> ny = new List<int>(30);
+		List<int> dv = new List<int>(30);
+
+		private void frm_main_Load(object sender, EventArgs e)
+		{
+			Random r = new Random();
+
+			/* fill the cities with temperature data */
+			for (int i = 0; i < 30; ++i) {
+				sf.Add(r.Next(2, 70));
+				ny.Add(r.Next(21, 68));
+				dv.Add(r.Next(18, 74));
+			}
+		}
+
+		private (int, int) high_and_low(List<int> city)
+		{
+			int low = 999;
+			int high = -999;
+
+			/* find the highest and lowest temperatures */
+			for (int i = 0; i < 30; ++i) {
+				if (city[i] < low)
+					low = city[i];
+				if (city[i] > high)
+					high = city[i];
+			}
+			/* return the two temperatures as a tuple */
+			return (low, high);
+		}
+
+		/* convert fahrenheit to celsius */
+		private int f2c(int f)
+		{
+			double c = .56*(f-32);
+			return (int)c;
+		}
+
+		private void show(List<int> city)
+		{
+			/* get the highest and lowest temperatures of a city */
+			(int low, int high) tmptr = high_and_low(city);
+
+			/* show the temperatures on the form */
+			txt_low_f.Text = tmptr.low.ToString() + "°f";
+			txt_high_f.Text = tmptr.high.ToString() + "°f";
+			txt_low_c.Text = f2c(tmptr.low).ToString() + "°c";
+			txt_high_c.Text = f2c(tmptr.high).ToString() + "°c";
+		}
+
+		private void btn_add_Click(object sender, EventArgs e)
+		{
+			if (txt_add.Text == "") {
+				MessageBox.Show("You need to enter a temperature",
+					"Entry Error");
+				txt_add.Focus();
+				return;
+			}
+			if (!int.TryParse(txt_add.Text, out int i)) {
+				MessageBox.Show("The temperature must be a whole number",
+					"Entry Error");
+				txt_add.Focus();
+				return;
+			}
+
+			/* find the selected city */
+			if (radio_sf.Checked) {
+				/* remove the oldest temperature */
+				sf.RemoveAt(0);
+				/* add a new temperature */
+				sf.Add(int.Parse(txt_add.Text));
+				/* redisplay the temperatures */
+				show(sf);
+			}
+			else if (radio_ny.Checked) {
+				ny.RemoveAt(0);
+				ny.Add(int.Parse(txt_add.Text));
+				show(ny);
+			}
+			else if (radio_dv.Checked) {
+				dv.RemoveAt(0);
+				dv.Add(int.Parse(txt_add.Text));
+				show(dv);
+			}
+			else {
+				MessageBox.Show("You need to select a city",
+					"Entry Error");
+			}
+		}
+
+		private void radio_sf_CheckedChanged(object sender, EventArgs e)
+		{
+			show(sf);
+		}
+
+		private void radio_ny_CheckedChanged(object sender, EventArgs e)
+		{
+			show(ny);
+		}
+
+		private void radio_dv_CheckedChanged(object sender, EventArgs e)
+		{
+			show(dv);
+		}
+
+		private void btn_exit_Click(object sender, EventArgs e)
+		{
+			this.Close();
+		}
+	}
+}