1. using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
double n;
Console.Write("san engiz:");
n = Convert.ToDouble(Console.ReadLine());
double s=0;
double i;
for (i = 1; i <= n; i++)
{
double k = System.Math.Pow(i, 2);
s +=k;
}
Console.WriteLine(s);
Console.ReadKey();
}
}
}
2. Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Console.Write("200-ge deingi 25-ke kaldiksiz bolinetin sandar sani:");
int k = 0;
for (int i = 1; i <= 200; i++)
{
if (i % 25 == 0)
k++;
}
Console.WriteLine(k);
Console.ReadKey();
}
}
}
3. Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Console.Write("summa:");
int s = 0;
for (int i = 21; i < 100; i++)
{
if (i % 3 == 0)
s+=i;
}
Console.WriteLine(s);
Console.ReadKey();
}
}
}
4. Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Console.Write("olwem birlikti engiz:");
double m;
m = Convert.ToInt32(Console.ReadLine());
double k;
Console.Write("1 futka auistiru:");
k = 0.3048 * m;
Console.Write(k);
Console.WriteLine("1 drahm auistiru:");
k = 3.7325 * m;
Console.Write(k);
Console.WriteLine("1 duim auistiru:");
k = 25.3995 * m;
Console.Write(k);
Console.ReadKey();
}
}
}
5. Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int a1;
Console.Write("a1:");
a1 = Convert.ToInt32(Console.ReadLine());
int d;
Console.Write("d:");
d = Convert.ToInt32(Console.ReadLine());
int n;
Console.Write("n:");
n = Convert.ToInt32(Console.ReadLine());
int s;
s = (2 * a1 + (n - 1) * d) * n / 2;
Console.WriteLine("arifmetikalik prog:"+s);
double l;
l = a1 * (Math.Pow(d, n) - 1) / (d - 1);
Console.WriteLine("geometrialik prog:" + l);
Console.ReadKey();
}
}
}
6. Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int c = 5;
int a = 3;
int b;
b = Convert.ToInt32(Math.Sqrt(c * c - a * a));
Console.WriteLine(b);
int p;
p =( a + b + c)/2;
double r;
r = Convert.ToDouble(Math.Sqrt(((p - a) * (p - b) * (p - c))/p));
Console.WriteLine(r);
Console.ReadKey();
}
}
}