C Exercises: Display the pattern like a pyramid containing odd number of asterisks

Last update on March 18 2025 13:35:41 (UTC/GMT +8 hours)

20. Pyramid Pattern with Odd Asterisks

Write a C program to display the pattern as a pyramid using asterisks, with each row containing an odd number of asterisks.

The pattern is as below:

   *
  ***
 *****

This C program generates a pyramid pattern using asterisks, with each row containing an odd number of asterisks centered to form a pyramid shape. The program prompts the user to input the number of rows and then uses nested loops to print spaces and asterisks in the required pattern.

Visual Presentation:

Sample Solution:

C Code:

#include <stdio.h> // Include the standard input/output header file.

void main()
{
    int i, j, n; // Declare variables to store input and control loop indices.

    // Prompt the user to input the number of rows for the pattern.
    printf("Input number of rows for this pattern :");
    scanf("%d", &n); // Read the value of 'n' from the user.

    for (i = 0; i < n; i++) // Loop for the number of rows.
    {
        for (j = 1; j <= n - i; j++) // Loop to print spaces before the stars.
            printf(" ");

        for (j = 1; j <= 2 * i - 1; j++) // Loop to print the stars.
            printf("*");

        printf("\n"); // Move to the next line after printing each row.
    }
}

Output:

Input number of rows for this pattern :5                                                                      
                                                                                                              
    *                                                                                                         
   ***                                                                                                        
  *****                                                                                                       
 ******* 

Flowchart

For more Practice: Solve these Related Problems:

• Write a C program to display a centered pyramid where each row contains an odd number of asterisks.
• Write a C program to display an inverted pyramid with odd-numbered asterisk counts.
• Write a C program to print a pyramid of asterisks and then compute the total number of asterisks used.
• Write a C program to display a pyramid of asterisks and then mirror the pattern vertically.

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