C Program to Print Hollow Inverted Star Pyramid

Write a C Program to Print Hollow Inverted Star Pyramid Pattern using for loop. This example uses nested for loops and if-else conditions to print the hollow inverted pyramid star pattern.

#include<stdio.h>
int main()
{
 	int i, j, rows; 
 	printf("Enter Hollow Inverted Star Pyramid Rows =  ");
 	scanf("%d", &rows);

    printf("Hollow Inverted Star Pyramid Pattern\n");
	for(i = rows; i > 0; i--)
	{
        for(j = 1; j <= rows - i; j++)
        {
            printf(" ");
        }

        if(i == 1 || i == rows)
        {
            for(j = 1; j <= i * 2 - 1; j++)
            {
                printf("*");
            }
        }
        else
        {
            for(j = 1; j <= i * 2 - 1; j++)
            {
                if(j == 1 || j == i * 2 - 1)
                {
                    printf("*");
                }
                else
                {
                    printf(" ");
                }
            }
        }   
		printf("\n");
	}
 	return 0;
}

This C Program Prints a Hollow Inverted Star Pyramid Pattern using While loop. It allows entering symbols to print as Hollow Inverted Pyramid pattern.

#include<stdio.h>
int main()
{
    int i, j, rows;
    char ch;
    
    printf("Symbol to Print as Hollow Inverted Pyramid =  ");
    scanf("%c", & ch);

    printf("Enter Hollow Inverted Star Pyramid Rows =  ");
    scanf("%d", &rows);

    printf("Hollow Inverted Star Pyramid Pattern\n");
    i = rows;
    while(i > 0)
    {
        j = 1;
        while(j <= rows - i)
        {
            printf(" ");
            j++;
        }

        if(i == 1 || i == rows)
        {
            j = 1;
            while(j <= i * 2 - 1)
            {
                printf("%c", ch);
                j++;
            }
        }
        else
        {
            j = 1;
            while(j <= i * 2 - 1)
            {
                if(j == 1 || j == i * 2 - 1)
                {
                    printf("%c", ch);
                }
                else
                {
                    printf(" ");
                }
                j++;
            }
        }
        printf("\n");
        i--;
    }
     return 0;
}

Symbol to Print as Hollow Inverted Pyramid =  *
Enter Hollow Inverted Star Pyramid Rows =  10
Hollow Inverted Star Pyramid Pattern
*******************
 *               *
  *             *
   *           *
    *         *
     *       *
      *     *
       *   *
        * *
         *