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
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 for (int row = 8; row >= 1; --row)
6 {
7 for (int col = 1; col <= row; ++col)
8 {
9 Console.Write("*");
10 }
11
12 Console.WriteLine();
13 }
14 Console.ReadLine();
15 }
16 } Right Angle Triangle Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 for (int row = 1; row <= 8; ++row)
6 {
7 for (int col = 1; col <= row; ++col)
8 {
9 Console.Write("*");
10 }
11
12 Console.WriteLine();
13 }
14 Console.ReadLine();
15 }
16 } Diamond Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 int number = 8, count = 1;
6 count = number - 1;
7 for (var k = 1; k <= number; k++)
8 {
9 for (var i = 1; i <= count; i++)
10 Console.Write(" ");
11 count--;
12 for (var i = 1; i <= 2 * k - 1; i++)
13 Console.Write("*");
14 Console.WriteLine();
15 }
16 count = 1;
17 for (var k = 1; k <= number - 1; k++)
18 {
19 for (var i = 1; i <= count; i++)
20 Console.Write(" ");
21 count++;
22 for (var i = 1; i <= 2 * (number - k) - 1; i++)
23 Console.Write("*");
24 Console.WriteLine();
25 }
26 Console.ReadLine();
27 }
28 } Right Angle Triangle Reflection Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 int val = 8;
6 int i, j, k;
7 for (i = 1; i <= val; i++)
8 {
9 for (j = 1; j <= val - i; j++)
10 {
11 Console.Write(" ");
12 }
13 for (k = 1; k <= i; k++)
14 {
15 Console.Write("*");
16 }
17 Console.WriteLine("");
18 }
19 Console.ReadLine();
20 }
21 } Parallelogram Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 int size = 8;
6 for (int row = 1; row <= size; ++row)
7 {
8 for (int col = 1; col <= row; ++col)
9 {
10 Console.Write(" ");
11 }
12
13 for (int col = 1; col <= size; ++col)
14 {
15 Console.Write("*");
16 }
17
18 Console.WriteLine();
19 }
20 Console.ReadLine();
21 }
22 } Hollow Rectangle Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 int number = 7;
6 for (int i = 0; i < number; i++)
7 {
8 if (i == 0 || i == 6)
9 {
10 for (int j = 0; j < number; j++)
11 {
12 Console.Write("*");
13 }
14 Console.WriteLine();
15 }
16 if (i >= 1 && i <= 5)
17 {
18 for (int j = 0; j < number; j++)
19 {
20 if (j == 0 || j == 6)
21 {
22 Console.Write("*");
23 }
24 else if (j >= 1 && j <= 5)
25 {
26 Console.Write(" ");
27 }
28 }
29 Console.WriteLine();
30 }
31 }
32 Console.ReadLine();
33 }
34 } Castle Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 int n = 8;
6 for (int i = 0; i < n; ++i)
7 {
8 Stars(i + 1);
9 Spaces(n - i - 1);
10 Stars(n - i + 1);
11 Spaces(2 * i);
12 Stars(n - i);
13 Spaces(n - i - 1);
14 Stars(i + 1);
15
16 Console.WriteLine();
17 }
18 Console.ReadLine();
19 }
20
21 private static void Stars(int count)
22 {
23 for (int i = 0; i < count; ++i)
24 Console.Write("*");
25 }
26
27 private static void Spaces(int count)
28 {
29 for (int i = 0; i < count; ++i)
30 Console.Write(" ");
31 }
32 } Pyramid Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 int x = 8;
6 for (int i = 1; i <= x; i++)
7 {
8 for (int j = 1; j <= (x - i); j++)
9 Console.Write(" ");
10
11 for (int t = 1; t < i * 2; t++)
12 Console.Write("*");
13 Console.WriteLine();
14 }
15 Console.ReadLine();
16 }
17 } Fair Flag Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 int space = 0;
6 int max = 10;
7
8 for (var i = max; i > 0; i--)
9 {
10 for (var j = 0; j < i; j++)
11 {
12 Console.Write("*");
13 }
14 for (var j = 0; j < space; j++)
15 {
16 Console.Write(" ");
17 }
18
19 for (var j = 0; j < i; j++)
20 {
21 Console.Write("*");
22 }
23
24 Console.WriteLine();
25 space += 2;
26 }
27 Console.ReadLine();
28 }
29 } Hollow Right Angle Triangle Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 int max = 10;
6 for (var i = 1; i <= max; i++)
7 {
8 for (var j = 1; j <= i; j++)
9 {
10 if (j == 1 || j == i || i == max)
11 {
12 Console.Write("*");
13 }
14 else
15 {
16 Console.Write(" ");
17 }
18 }
19 Console.WriteLine();
20 }
21 Console.ReadLine();
22 }
23 } Hollow Pyramid Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5
6 int max = 8;
7 for (var i = 1; i <= max; i++)
8 {
9 for (var j = i; j < max; j++)
10 {
11 Console.Write(" ");
12 }
13 for (var j = 1; j <= (2 * i - 1); j++)
14 {
15 if (i == max || j == 1 || j == (2 * i - 1))
16 {
17 Console.Write("*");
18 }
19 else
20 {
21 Console.Write(" ");
22 }
23 }
24 Console.WriteLine();
25 }
26 Console.ReadLine();
27 }
28 } Left Arrow Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 var num = 8;
6 for (var i = -num; i <= num; i++)
7 {
8 var k = i;
9 if (k < 0)
10 {
11 k = k * -1;
12 }
13 for (var j = 0; j <= num; ++j)
14 {
15 if (j < k)
16 {
17 Console.Write(" ");
18 }
19 else
20 {
21 Console.Write("* ");
22 }
23 }
24 Console.WriteLine();
25 }
26 Console.ReadLine();
27 }
28 } Hollow Diamond Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 int size = 5;
6 int z = 1;
7 for (int i = 0; i <= size; i++)
8 {
9 for (int j = size; j > i; j--)
10 {
11 Console.Write(" ");
12 }
13
14 Console.Write("*");
15
16 if (i > 0)
17 {
18 for (int k = 1; k <= z; k++)
19 {
20 Console.Write(" ");
21 }
22 z += 2;
23 Console.Write("*");
24 }
25 Console.WriteLine();
26 }
27
28 z -= 4;
29
30 for (int i = 0; i <= size - 1; i++)
31 {
32 for (int j = 0; j <= i; j++)
33 {
34 Console.Write(" ");
35 }
36
37 Console.Write("*");
38
39 for (int k = 1; k <= z; k++)
40 {
41 Console.Write(" ");
42 }
43 z -= 2;
44
45 if (i != size - 1)
46 {
47 Console.Write("*");
48 }
49 Console.WriteLine();
50 }
51 Console.ReadLine();
52 }
53 } Heart Pattern
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 int size = 5;
6 for (int x = 0; x < size; x++)
7 {
8 for (int y = 0; y <= 4 * size; y++)
9 {
10 double dist1 = Math.Sqrt(Math.Pow(x - size, 2) + Math.Pow(y - size, 2));
11 double dist2 = Math.Sqrt(Math.Pow(x - size, 2) + Math.Pow(y - 3 * size, 2));
12
13 if (dist1 < size + 0.5 || dist2 < size + 0.5)
14 Console.Write("*");
15 else
16 Console.Write(" ");
17 }
18 Console.WriteLine();
19 }
20
21 for (int x = 1; x < 2 * size; x++)
22 {
23 for (int y = 0; y < x; y++)
24 Console.Write(" ");
25
26 for (int y = 0; y < 4 * size + 1 - 2 * x; y++)
27 {
28 Console.Write("*");
29
30 }
31 Console.WriteLine();
32 }
33 Console.ReadLine();
34 }
35 } Subscribe to Code with Shadman
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