Making a Pyramid
Now, let’s create a method that will display a pyramid of any height to the console window using star (*) symbols.
Based on this description, a parameter will be defined to reflect the number of rows for the pyramid.
So, let’s start by declaring the method:
static void DrawPyramid(int n)
{
//some code will go here
}
DrawPyramid does not need to return a value and takes an integer parameter n.
In programming, the step by step logic required for the solution to a problem is called an algorithm. The algorithm for MakePyramid is:
1. The first row should contain one star at the top center of the pyramid. The center is calculated based on the number of rows in the pyramid.
2. Each row after the first should contain an odd number of stars (1, 3, 5, etc.), until the number of rows is reached.
Based on the algorithm, the code will use for loops to display spaces and stars for each row:
The Code:
The Output of Your Program:
The first for loop that iterates through each row of the pyramid contains two for loops.
The first inner loop displays the spaces needed before the first star symbol. The second inner loop displays the required number of stars for each row, which is calculated based on the formula (2*i-1) where i is the current row.
The final Console.WriteLine(); statement moves the cursor to the next row.
Now, if we call the DrawPyramid method, it will display a pyramid having the number of rows we pass to the method.
Csharp SelfStudy 