How to Display R Pattern in C with Star (*) – Step-by-Step

 C program to Print  Alphabet  R star pattern 

Star pattern C program to Print  Alphabet  R

Example 

#include <stdio.h>

int main()
{
    int rows;
    printf("Enter Rows = ");
    scanf("%d", &rows);

    for (int a = 0; a < rows; a++)
    {
        for (int b = 0; b < rows; b++)
       {
            if ((a == 0 || a == rows / 2) && (0 < b < rows - 1))
         {
                printf("*");
            }
            else if ((a != 0) && (b == 0 || (b == rows - 1 && a < rows / 2 )))
            {
                printf("*");
            }
            else if(b == a && a >= rows / 2)
            {
                printf("*");
            }
            else
            {
            printf(" ");
         }
        }
        printf("\n");
    }
    return 0;
}

This C Program Print a pattern in the shape of the capital letter R using asterisks (*) 
Explain Program

Step :1

      #include <stdio.h>

Includes the standard input/output library for functions like printf() and scanf().

Step :2

     int main() {

 Start of the main function where the execution begins.

Step :3

     int rows;

    printf("Enter Rows = ");

    scanf("%d", &rows);

rows: User-defined number of rows for the pattern.

scanf reads the number from the user.

Step :4

      for (int a = 0; a < rows; a++)

Iterates over each row (a from 0 to rows - 1).

Step :5

     for (int b = 0; b < rows; b++)

For each row, prints characters in the columns (b from 0 to rows - 1).

Step :6

      if ((a == 0 || a == rows / 2) && (0 < b < rows - 1))

 When it's the first row (a == 0) or the middle row (a == rows / 2)

 AND column is not at the edges

Then print * to form the top and middle horizontal bars of the 'R'

Step :7

else if ((a != 0) && (b == 0 || (b == rows - 1 && a < rows / 2 )))

Not the first row (a != 0)
AND
First column (b == 0) → draws the left vertical line of 'R'
OR: Last column (b == rows - 1) AND row is in top half → forms top-right vertical for the top semi-circle of 'R'

Step :8

else if (b == a && a >= rows / 2)

• For rows in the bottom half (a >= rows / 2)

• And when b == a → diagonal

• This draws the slanting leg of 'R' from the middle down to the bottom-right.

Step :9

else {

    printf(" ");

}

• If none of the above conditions are met, print space.

Step :10

printf("\n");

• Moves to the next line after finishing a row.

return 0;

Program ends 

Star pattern C program to Print  Alphabet  R
Example 

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