C program to print hollow mirrored right triangle star pattern * ** *

Programming Example

C program to print hollow mirrored right triangle star pattern

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💻 Practical Program

📘 Step by Step Learning

Write a C program to print hollow mirrored right triangle star pattern of n rows using for loop. How to print hollow mirrored right triangle star pattern series using for loop in C program. Logic to print hollow mirrored right triangle star pattern in C programming.

Program Code

/**
 * C program to print hollow mirrored right triangle star pattern
* atnyla.com 
*/

#include <stdio.h>

int main()
{
    int i, j, rows;

    /* Input rows from user */
    printf("Enter number of rows : ");
    scanf("%d", &rows);

    /* Iterate through rows */
    for(i=1; i<=rows; i++)
    {
        /* Print trailing spaces */
        for(j=i; j<rows; j++)
        {
            printf(" ");
        }

        /* Print hollow right triangle */
        for(j=1; j<=i; j++)
        {
            /*
             * Print star for last row(i==row),
             * first column(j==1) and
             * last column(j==i).
             */
            if(i==rows || j==1 || j==i)
            {
                printf("*");
            }
            else
            {
                printf(" ");
            }
        }

        printf("\n");
    }

    return 0;
}
Output

Output

Enter number of rows: 5
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Explanation

Required knowledge

Basic C programming, If else, For loop, Nested loop

Must know - Program to print hollow right triangle.

Logic to print hollow mirrored right triangle star pattern

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The above pattern is almost similar to mirrored right triangle star pattern with stars printed only for first or last column and for last row.

Step by step descriptive logic to print hollow mirrored right triangle star pattern.

Input number of rows to print from user. Store it in a variable say rows.
To iterate through rows, run an inner loop from 1 to rows with structure for(i=1; i<=rows; i++).
To print spaces run an inner loop from i to rows. The loop structure should look like for(j=i; j<=rows; j++). Inside the loop print single space.
To print star, run another inner loop from 1 to i with loop structure for(j=1; j<=i; j++). Inside the loop print star for first or last column or last row.
After printing all columns move to next line.

How to learn from this program

First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.

Practice suggestion

After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.

C program to print hollow mirrored right triangle star pattern
* ** * * * * *****

Program Code

Output

Explanation

Required knowledge

Logic to print hollow mirrored right triangle star pattern

How to learn from this program

Practice suggestion

Quick Practice Flow

Related Programs

C program to print hollow mirrored right triangle star pattern * ** * * * * *****

Program Code

Output

Explanation

Required knowledge

Logic to print hollow mirrored right triangle star pattern

How to learn from this program

Practice suggestion

Quick Practice Flow

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C program to print hollow mirrored right triangle star pattern
* ** * * * * *****