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  1. #include <stdio.h>
  2. #define high 32
  3. #define yoko 64
  4.  
  5. int screen[high][yoko];
  6.  
  7. void draw_fractal(int x, int y, int size) {
  8.     if (size == 1) {
  9.         screen[y][x] = 'X';
  10.         return;
  11.     }
  12.  
  13.     int half = size / 2;
  14.  
  15.     // 3つの小さな三角形に分割
  16.     draw_fractal(x, y, half);
  17.     draw_fractal(x - half, y + half, half);
  18.     draw_fractal(x + half, y + half, half);
  19. }
  20.  
  21. int main(void) {
  22.     // 1. 空白で初期化
  23.     for (int y = 0; y < high; y++) {
  24.         for (int x = 0; x < yoko; x++) {
  25.             screen[y][x] = ' ';
  26.         }
  27.     }
  28.  
  29.     draw_fractal(32, 0, high);
  30.  
  31.     // 3. 画面に出力
  32.     for (int y = 0; y < high; y++) {
  33.         for (int x = 0; x < yoko; x++) {
  34.             putchar(screen[y][x]);
  35.         }
  36.         putchar('\n');
  37.     }
  38.  
  39.     return 0;
  40. }
Success #stdin #stdout 0s 5284KB
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stdout
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                                X                               
                               X X                              
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                           X X     X X                          
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                       X X             X X                      
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                     X X X X         X X X X                    
                    X       X       X       X                   
                   X X     X X     X X     X X                  
                  X   X   X   X   X   X   X   X                 
                 X X X X X X X X X X X X X X X X                
                X                               X               
               X X                             X X              
              X   X                           X   X             
             X X X X                         X X X X            
            X       X                       X       X           
           X X     X X                     X X     X X          
          X   X   X   X                   X   X   X   X         
         X X X X X X X X                 X X X X X X X X        
        X               X               X               X       
       X X             X X             X X             X X      
      X   X           X   X           X   X           X   X     
     X X X X         X X X X         X X X X         X X X X    
    X       X       X       X       X       X       X       X   
   X X     X X     X X     X X     X X     X X     X X     X X  
  X   X   X   X   X   X   X   X   X   X   X   X   X   X   X   X 
 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
https://ideone.com/hhbYWN
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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