13.Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
try
{
StreamWriter sw = new StreamWriter("C:\\Test.txt");
List<string> words = new List<string>();
string s="North South East West Flamingo";
while (true)
{
if (s == "$exit")
break;
else
words.Add(s);
}
for (int i = words.Count - 1; i >= 0; i--)
{
sw.WriteLine(words[i]);
}
sw.Close();
}
catch (Exception e)
{
Console.WriteLine("Exception: " + e.Message);
}
finally
{
Console.WriteLine("Executing finally block.");
}
Console.ReadKey();
}
}
}
12. Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
var list = new List<string> { "black","red","yellow" };
list.Sort();
foreach (var value in list)
{
Console.WriteLine(value);
}
Console.ReadLine();
}
}
}
14. Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace WindowsFormsApplication1
{
public partial class Form1:Form
{
Dictionary<int,Kairat> Numbers=new Dictionary<int,,Kairat>()
{{7,new Kairat (“Cristiano Ronaldo”)},
{9,new Kairat (“Wayne Roney”)},
{11,new Kairat (“Karim Benzema”)},
{3,new Kairat (“Ashley Cole”)},
{8,new Kairat (“Steve Gerrard”)},};
public Form1(){
InitializeComponent();
foreach (int key in Numbers.Keys){
number.Items.Add(key);}
}
private void number_SelectIndexChanged(object sender,EventArgs e)
{
Kairat kairat=Numbers[(int)number.SelectedItem] as Kairat;
nameLabel.Text=kairat.Player;
yearLabel.Text=kairat.Year.ToString();
}
}
Қайрат классын құрамыз.
сlass Kairat{
public string Player{get;private set;}
public int Year{get;private set;}
public KairatNumber(string player,int number)
{Player=player;
Year=number;
}
}
15. Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int a;
int b;
int c;
double d;
Console.Write("a=");
a = Convert.ToInt32(Console.ReadLine());
Console.Write("b=");
b = Convert.ToInt32(Console.ReadLine());
Console.Write("c=");
c = Convert.ToInt32(Console.ReadLine());
Console.ReadKey();
d = b * b - 4 * a * c;
double x1, x2;
x1=(-b-Math.Sqrt(d))/(2*a);
x2=(-b+Math.Sqrt(d))/(2*a);
Console.Write(x1);
Console.Write(x2);
Console.ReadKey();
}
}
}