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  1. #include <stdio.h>
  2.  
  3. void foo( unsigned char a, 
  4. 	  unsigned char b, 
  5. 	  unsigned char c, 
  6. 	  ...  )
  7. {
  8.         printf( "a: %p\nb: %p\nc: %p\n", 
  9.                 (void *)&a, 
  10.                 (void *)&b, 
  11.                 (void *)&c );
  12.  
  13.         printf( "d1: %hhu\n", *(&c - 8) );
  14.         printf( "d2: %hhu\n", *(&c - 4) );
  15.         printf( "d3: %hhu\n", *(&c + 4) );
  16.         printf( "d4: %hhu\n", *(&c + 8) );
  17.         printf( "d5: %hhu\n", *(&c + 12) );
  18.         printf( "d6: %hhu\n", *(&c + 16) );
  19.  
  20. }
  21.  
  22.  
  23.  
  24. int main(void)
  25. {
  26.         foo( 1, 2, 3, 4 );
  27.  
  28.  
  29.         return 0;
  30. }
  31.  
Success #stdin #stdout 0.01s 1720KB
comments (?)
stdin
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Standard input is empty
stdout
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a: 0xbf9ab408
b: 0xbf9ab404
c: 0xbf9ab400
d1: 4
d2: 0
d3: 2
d4: 1
d5: 71
d6: 1
https://ideone.com/ELrei
language:
C99 (gcc 8.3)
created:
14 years ago
visibility:
public

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