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  1. // gcc       -fstrict-aliasing -std=c99   -O2
  2.  
  3. #include <stdio.h>
  4.  
  5. union
  6. {   
  7.     int i;
  8.     short s;
  9. } u;
  10.  
  11. int     * i = &u.i;
  12. short   * s = &u.s;
  13.  
  14. int main()
  15. {   
  16.     *i  = 2;
  17.     *s  = 100;
  18.  
  19.     printf(" *i = %d\n",  *i); // prints 2
  20.     printf("u.i = %d\n", u.i); // prints 100
  21.  
  22.     return 0;
  23. }
Success #stdin #stdout 0s 2168KB
comments (?)
stdin 
Standard input is empty
stdout 
 *i = 100
u.i = 100
https://ideone.com/SUw1di
language:
C99 (gcc 8.3)
created:
9 years ago
visibility:
secret

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