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  1. #include <stdio.h>
  2.  
  3. #define WIDTH  11
  4. #define HEIGHT 11
  5.  
  6. char grid[HEIGHT][WIDTH];
  7.  
  8. // Function to initialize the grid with dots
  9. void initGrid() {
  10.     for (int y = 0; y < HEIGHT; y++)
  11.         for (int x = 0; x < WIDTH; x++)
  12.             grid[y][x] = '.';
  13. }
  14.  
  15. // Function to print the grid with origin at center
  16. void printGrid() {
  17.     for (int y = HEIGHT - 1; y >= 0; y--) {
  18.         for (int x = 0; x < WIDTH; x++) {
  19.             printf("%c ", grid[y][x]);
  20.         }
  21.         printf("\n");
  22.     }
  23. }
  24.  
  25. // Converts coordinate (x, y) to grid position
  26. void plotPoint(int x, int y, char symbol) {
  27.     int gridX = x + WIDTH / 2;
  28.     int gridY = y + HEIGHT / 2;
  29.  
  30.     if (gridX >= 0 && gridX < WIDTH && gridY >= 0 && gridY < HEIGHT)
  31.         grid[gridY][gridX] = symbol;
  32. }
  33.  
  34. int main() {
  35.     initGrid();
  36.  
  37.     // Original triangle ABC
  38.     int Ax = 2, Ay = 2;
  39.     int Bx = 6, By = 2;
  40.     int Cx = 4, Cy = 5;
  41.  
  42.     // Plot original triangle points
  43.     plotPoint(Ax, Ay, 'A');
  44.     plotPoint(Bx, By, 'B');
  45.     plotPoint(Cx, Cy, 'C');
  46.  
  47.     // Reflected triangle A'B'C' across X-axis (negate Y)
  48.     plotPoint(Ax, -Ay, 'a');
  49.     plotPoint(Bx, -By, 'b');
  50.     plotPoint(Cx, -Cy, 'c');
  51.  
  52.     printf("Grid showing Triangle ABC and its reflection (a, b, c) across X-axis:\n\n");
  53.     printGrid();
  54.  
  55.     return 0;
  56. }
  57.  
Success #stdin #stdout 0.01s 5280KB
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Standard input is empty
stdout
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Grid showing Triangle ABC and its reflection (a, b, c) across X-axis:

. . . . . . . . . C . 
. . . . . . . . . . . 
. . . . . . . . . . . 
. . . . . . . A . . . 
. . . . . . . . . . . 
. . . . . . . . . . . 
. . . . . . . . . . . 
. . . . . . . a . . . 
. . . . . . . . . . . 
. . . . . . . . . . . 
. . . . . . . . . c .
https://ideone.com/9BCxFJ
language:
C99 (gcc 8.3)
created:
8 days ago
visibility:
public

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