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Module DEMO-32-60DEMO-C-32

Butterfly Pattern

DEMO-C-32 • Programming in C

Browser-only practice

Problem Statement

Write a program that reads an integer N and prints a butterfly pattern of stars.

Constraints

1 <= N <= 20

Input Format

A single integer N (1 <= N <= 20).

Output Format

A butterfly pattern.

Sample Testcases

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Sample #1
Public sample
Input
3
Output
*    *
**  **
******
**  **
*    *
Explanation
Input: 3
Sample #2
Public sample
Input
5
Output
*        *
**      **
***    ***
****  ****
**********
****  ****
***    ***
**      **
*        *
Explanation
Input: 5
Sample #3
Public sample
Input
1
Output
**
Explanation
Input: 1
Sample #4
Public sample
Input
2
Output
*  *
****
*  *
Explanation
Input: 2

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