C# Pattern Programs
This article explains various star (*) pattern programs in c# programming language. You can download the complete project from here containing source code for all the star pattern programs discussed in this article.
Content
- Inverted Right Angle Triangle Pattern
- Right Angle Triangle Pattern
- Diamond Pattern
- Right Angle Triangle Reflection Pattern
- Parallelogram Pattern
- Hollow Rectangle Pattern
- Castle Pattern
- Pyramid Pattern
- Fair Flag Pattern
- Hollow Right Angle Triangle Pattern
- Hollow Pyramid Pattern
- Left Arrow Pattern
- Hollow Diamond Pattern
- Heart Pattern
Inverted Right Angle Triangle Pattern
class Program
{
static void Main(string[] args)
{
for (int row = 8; row >= 1; --row)
{
for (int col = 1; col <= row; ++col)
{
Console.Write("*");
}
Console.WriteLine();
}
Console.ReadLine();
}
}
Right Angle Triangle Pattern
class Program
{
static void Main(string[] args)
{
for (int row = 1; row <= 8; ++row)
{
for (int col = 1; col <= row; ++col)
{
Console.Write("*");
}
Console.WriteLine();
}
Console.ReadLine();
}
}
Diamond Pattern
class Program
{
static void Main(string[] args)
{
int number = 8, count = 1;
count = number - 1;
for (var k = 1; k <= number; k++)
{
for (var i = 1; i <= count; i++)
Console.Write(" ");
count--;
for (var i = 1; i <= 2 * k - 1; i++)
Console.Write("*");
Console.WriteLine();
}
count = 1;
for (var k = 1; k <= number - 1; k++)
{
for (var i = 1; i <= count; i++)
Console.Write(" ");
count++;
for (var i = 1; i <= 2 * (number - k) - 1; i++)
Console.Write("*");
Console.WriteLine();
}
Console.ReadLine();
}
}
Right Angle Triangle Reflection Pattern
class Program
{
static void Main(string[] args)
{
int val = 8;
int i, j, k;
for (i = 1; i <= val; i++)
{
for (j = 1; j <= val - i; j++)
{
Console.Write(" ");
}
for (k = 1; k <= i; k++)
{
Console.Write("*");
}
Console.WriteLine("");
}
Console.ReadLine();
}
}
Parallelogram Pattern
class Program
{
static void Main(string[] args)
{
int size = 8;
for (int row = 1; row <= size; ++row)
{
for (int col = 1; col <= row; ++col)
{
Console.Write(" ");
}
for (int col = 1; col <= size; ++col)
{
Console.Write("*");
}
Console.WriteLine();
}
Console.ReadLine();
}
}
Hollow Rectangle Pattern
class Program
{
static void Main(string[] args)
{
int number = 7;
for (int i = 0; i < number; i++)
{
if (i == 0 || i == 6)
{
for (int j = 0; j < number; j++)
{
Console.Write("*");
}
Console.WriteLine();
}
if (i >= 1 && i <= 5)
{
for (int j = 0; j < number; j++)
{
if (j == 0 || j == 6)
{
Console.Write("*");
}
else if (j >= 1 && j <= 5)
{
Console.Write(" ");
}
}
Console.WriteLine();
}
}
Console.ReadLine();
}
}
Castle Pattern
class Program
{
static void Main(string[] args)
{
int n = 8;
for (int i = 0; i < n; ++i)
{
Stars(i + 1);
Spaces(n - i - 1);
Stars(n - i + 1);
Spaces(2 * i);
Stars(n - i);
Spaces(n - i - 1);
Stars(i + 1);
Console.WriteLine();
}
Console.ReadLine();
}
private static void Stars(int count)
{
for (int i = 0; i < count; ++i)
Console.Write("*");
}
private static void Spaces(int count)
{
for (int i = 0; i < count; ++i)
Console.Write(" ");
}
}
Pyramid Pattern
class Program
{
static void Main(string[] args)
{
int x = 8;
for (int i = 1; i <= x; i++)
{
for (int j = 1; j <= (x - i); j++)
Console.Write(" ");
for (int t = 1; t < i * 2; t++)
Console.Write("*");
Console.WriteLine();
}
Console.ReadLine();
}
}
Fair Flag Pattern
class Program
{
static void Main(string[] args)
{
int space = 0;
int max = 10;
for (var i = max; i > 0; i--)
{
for (var j = 0; j < i; j++)
{
Console.Write("*");
}
for (var j = 0; j < space; j++)
{
Console.Write(" ");
}
for (var j = 0; j < i; j++)
{
Console.Write("*");
}
Console.WriteLine();
space += 2;
}
Console.ReadLine();
}
}
Hollow Right Angle Triangle Pattern
class Program
{
static void Main(string[] args)
{
int max = 10;
for (var i = 1; i <= max; i++)
{
for (var j = 1; j <= i; j++)
{
if (j == 1 || j == i || i == max)
{
Console.Write("*");
}
else
{
Console.Write(" ");
}
}
Console.WriteLine();
}
Console.ReadLine();
}
}
Hollow Pyramid Pattern
class Program
{
static void Main(string[] args)
{
int max = 8;
for (var i = 1; i <= max; i++)
{
for (var j = i; j < max; j++)
{
Console.Write(" ");
}
for (var j = 1; j <= (2 * i - 1); j++)
{
if (i == max || j == 1 || j == (2 * i - 1))
{
Console.Write("*");
}
else
{
Console.Write(" ");
}
}
Console.WriteLine();
}
Console.ReadLine();
}
}
Left Arrow Pattern
class Program
{
static void Main(string[] args)
{
var num = 8;
for (var i = -num; i <= num; i++)
{
var k = i;
if (k < 0)
{
k = k * -1;
}
for (var j = 0; j <= num; ++j)
{
if (j < k)
{
Console.Write(" ");
}
else
{
Console.Write("* ");
}
}
Console.WriteLine();
}
Console.ReadLine();
}
}
Hollow Diamond Pattern
class Program
{
static void Main(string[] args)
{
int size = 5;
int z = 1;
for (int i = 0; i <= size; i++)
{
for (int j = size; j > i; j--)
{
Console.Write(" ");
}
Console.Write("*");
if (i > 0)
{
for (int k = 1; k <= z; k++)
{
Console.Write(" ");
}
z += 2;
Console.Write("*");
}
Console.WriteLine();
}
z -= 4;
for (int i = 0; i <= size - 1; i++)
{
for (int j = 0; j <= i; j++)
{
Console.Write(" ");
}
Console.Write("*");
for (int k = 1; k <= z; k++)
{
Console.Write(" ");
}
z -= 2;
if (i != size - 1)
{
Console.Write("*");
}
Console.WriteLine();
}
Console.ReadLine();
}
}
Heart Pattern
class Program
{
static void Main(string[] args)
{
int size = 5;
for (int x = 0; x < size; x++)
{
for (int y = 0; y <= 4 * size; y++)
{
double dist1 = Math.Sqrt(Math.Pow(x - size, 2) + Math.Pow(y - size, 2));
double dist2 = Math.Sqrt(Math.Pow(x - size, 2) + Math.Pow(y - 3 * size, 2));
if (dist1 < size + 0.5 || dist2 < size + 0.5)
Console.Write("*");
else
Console.Write(" ");
}
Console.WriteLine();
}
for (int x = 1; x < 2 * size; x++)
{
for (int y = 0; y < x; y++)
Console.Write(" ");
for (int y = 0; y < 4 * size + 1 - 2 * x; y++)
{
Console.Write("*");
}
Console.WriteLine();
}
Console.ReadLine();
}
}
Written by
Shadman Kudchikar
I'm a passionate software developer living in Mumbai, India. I am a technology enthusiast and enjoy developing with all technologies, especially with .NET.
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