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

Programming Example

C program to print mirrored right triangle star pattern

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💻 Practical Program

📘 Step by Step Learning

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

Program Code

/**
 * C program to print mirrored right triangle star pattern series
* 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 spaces in decreasing order of row */
        for(j=i; j<rows; j++)
        {
            printf(" ");
        }

        /* Print star in increasing order or row */
        for(j=1; j<=i; j++)
        {
            printf("*");
        }

        /* Move to next line */
        printf("\n");
    }
    
    return 0;
}

Output

Enter number of rows: 5
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*****

Explanation

Required knowledge

Basic C programming, For loop, Nested loop

Logic to print mirrored right triangle star pattern

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The above pattern is similar to right triangle star pattern with leading spaces.

Leading spaces in the above pattern are in decreasing order i.e. first row contains n-1 space, second contains n-2 space and so on. Point your mouse cursor over the pattern to count total spaces per row.

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

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

Another way to solve the above program



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

#include <stdio.h>

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

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

    for(i=1; i <= n; i++)
    {
        /* Print i number of stars */
        for(j=1; j <= n; j++)
        {
            
			if( j >= n+1-i )
			printf("*");
			else
			printf(" ");
        }

        /* Move to next line */
        printf("\n");
    }

    return 0;
}

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 mirrored right triangle star pattern
* * *

Program Code

Output

Explanation

Required knowledge

Logic to print mirrored right triangle star pattern

Another way to solve the above program

How to learn from this program

Practice suggestion

Quick Practice Flow

Related Programs

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

Program Code

Output

Explanation

Required knowledge

Logic to print mirrored right triangle star pattern

Another way to solve the above program

How to learn from this program

Practice suggestion

Quick Practice Flow

Related Programs

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