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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int layers;
  5.  
  6.     printf("#Create the Christmas Tree#\n");
  7.     printf("Enter the number of the first leaf layer (3-19): ");
  8.     scanf("%d", &layers);
  9.  
  10.     // ตรวจสอบค่า input
  11.     if (layers < 3 || layers > 19) {
  12.         printf("Invalid input. Please enter a number between 3 and 19.\n");
  13.         return 1;
  14.     }
  15.  
  16.     // วาด first leaf layer
  17.     for (int i = 0; i < layers; i++) {
  18.         for (int j = 0; j < layers - i - 1; j++) {
  19.             printf(" ");
  20.         }
  21.         for (int k = 0; k < 2 * i + 1; k++) {
  22.             printf("*");
  23.         }
  24.         printf("\n");
  25.     }
  26.  
  27.     // วาด second leaf layer
  28.     for (int i = 0; i < layers - 1; i++) {
  29.         for (int j = 0; j < layers - i - 2; j++) {
  30.             printf(" ");
  31.         }
  32.         for (int k = 0; k < 2 * i + 3; k++) {
  33.             printf("*");
  34.         }
  35.         printf("\n");
  36.     }
  37.  
  38.     // วาดลำต้นของต้นคริสต์มาส
  39.     for (int i = 0; i < 2; i++) {
  40.         for (int j = 0; j < layers - 2; j++) {
  41.             printf(" ");
  42.         }
  43.         printf("***\n");
  44.     }
  45.  
  46.     return 0;
  47. }
Success #stdin #stdout 0.01s 5272KB
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#Create the Christmas Tree#
Enter the number of the first leaf layer (3-19):   *
 ***
*****
 ***
*****
 ***
 ***
https://ideone.com/Ov45eX
language:
C (gcc 8.3)
created:
28 days ago
visibility:
public

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