#include <stdio.h>
void main()
{
    int rows;
    printf("\nEnter the number of rows\n");
    scanf("%d", &rows);

    for (int i = 0; i <= rows - 1; i++)
    {
        //This loop is to print spaces in begining for the required pattern
        for (int j = 1; j <= rows - i + 1; j++)
        {
            printf("  ");
        }

        //This loop is for the 1st half of the pyramid
        for (int k = 0; k <= i; k++)
        {
            if (i % 2 == 0)
            {
                printf("# ");
            }
            else
            {
                printf("# ");
            }
        }

        //This loop is for the 2nd half of the pyramid
        for (int l = i - 1; l >= 0; l--)
        {
            if (i % 2 == 0)
            {
                printf("# ");
            }
            else
            {
                printf("# ");
            }
        }
        printf("\n");
    }
}