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  1. #include <stdio.h>
  2.  
  3. struct Point {
  4.     int x;
  5.     int y;
  6. };
  7. struct Rect {
  8.     struct Point lt;
  9.     struct Point rb;
  10. };
  11. void transform(struct Rect *r) {
  12.     int tmpltx, tmplty, tmprbx, tmprby;
  13.     tmpltx = -(*r).rb.x;
  14.     tmplty = -(*r).rb.y;
  15.     tmprbx = -(*r).lt.x;
  16.     tmprby = - (*r).lt.y;
  17.     (*r).rb.x = tmprbx;
  18.     (*r).rb.y = tmprby;
  19.     (*r).lt.x = tmpltx;
  20.     (*r).lt.y = tmplty;
  21.     return;
  22. }
  23.  
  24. int main () {
  25.     struct Rect rect = { {2, 4}, {7,1} };
  26.     transform(&rect);
  27.     printf("%d %d %d %d\n", rect.lt.x, rect.lt.y, rect.rb.x, rect.rb.y);
  28.     return 0;
  29. }
Success #stdin #stdout 0s 2168KB
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Standard input is empty
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-7 -1 -2 -4
https://ideone.com/AxPdvS
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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