C program to print rhombus or parallelogram star pattern ***** ***** *

🚀 Programming Example

C program to print rhombus or parallelogram star pattern

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👁 1,741 Views

💻 Practical Program

📘 Step Learning

Write a C program to print rhombus star pattern of N rows using for loop. How to print rhombus or parallelogram star pattern using for loop in C programming. Logic to print rhombus or parallelogram star pattern series in C program.

💻 Program Code

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

#include <stdio.h>

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

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

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

        /* Print stars after spaces */
        for(j=1; j<=rows; j++)
        {
            printf("*");
        }

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

    return 0;
}

🖥 Program Output

Enter rows: 5
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📘 Explanation

Logic to print rhombus star pattern

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Before I decode the logic of this pattern, have a close look of the pattern. Place your mouse cursor on to the pattern, to count spaces. Try to decode the logic of given pattern.

If you remove trailing spaces the pattern becomes a simple square star pattern of N rows and columns. You only need to add logic of printing spaces with the existing logic of square star pattern.

The pattern consists N - i spaces per row (where i is the current row number).

Step by step descriptive logic to print rhombus star pattern

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

🎯 How to learn from this example

First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.

🔥 Practice suggestion

Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.

C program to print rhombus or parallelogram star pattern
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💻 Program Code

🖥 Program Output

📘 Explanation

Logic to print rhombus star pattern

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🎯 How to learn from this example

🔥 Practice suggestion

⚡ Quick Practice Flow

📚 Related Programs

C program to print rhombus or parallelogram star pattern ***** ***** ***** ***** *****

💻 Program Code

🖥 Program Output

📘 Explanation

Logic to print rhombus star pattern

Master Programming Through Practical Examples

🎯 How to learn from this example

🔥 Practice suggestion

⚡ Quick Practice Flow

📚 Related Programs

C program to print rhombus or parallelogram star pattern
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