char[] letter = new char[26]
{
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U',
'V', 'W', 'X', 'Y', 'Z'
};
int num = 0;
Console.Write("Enter a Letter between A and Z : ");
char user_letter = Console.ReadKey().KeyChar;
Console.WriteLine("");
//search for letter number in the array letter
for (int i = 0; i < letter.Length; i++)
{
if (letter[i] == user_letter)
{
num = i;
break;
}
}
int mid = num * 2 - 1;
for (int i = 1; i <= num + 1; i++)
{
for (int k = 0; k < mid; k++)
{
Console.Write(" ");
}
mid--;
int p = i;
Console.Write(letter[p - 1]);
for (int j = 2; j < 2 * i - 1; j++)
{
Console.Write(" ");
}
if (p > 1)
Console.Write(letter[p - 1]);
Console.WriteLine();
}
mid += 2;
for (int i = num; i >= 1; i--)
{
for (int k = 0; k < mid; k++)
{
Console.Write(" ");
}
mid += 1;
int p = i;
Console.Write(letter[p - 1]);
for (int j = (2 * i)-1; j > 2; j--)
{
Console.Write(" ");
}
if (p > 1)
Console.Write(letter[p - 1]);
Console.WriteLine();
}
Console.ReadLine();
output :
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