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  1. #include <stdio.h>
  2.  
  3. union FPtrToOPtr_u
  4. {
  5. 	void (*FPtr)( void ); 
  6. 	void  *OPtr;
  7. };
  8.  
  9.  
  10. #define FUNCTION_ADR( FUNCTION_NAME ) {   					      \
  11. 					  union FPtrToOPtr_u Ptr;                     \
  12. 					  Ptr.FPtr = (void (*)( void ))FUNCTION_NAME; \
  13. 					  printf( "%p\n", 	  		      \
  14. 						  Ptr.OPtr ); 			      \
  15. 				      }
  16.  
  17.  
  18.  
  19. int add( int a, int b )
  20. {
  21. 	return a + b;
  22. }
  23.  
  24.  
  25.  
  26. int sub( int a, int b )
  27. {
  28. 	return a - b;
  29. }
  30.  
  31.  
  32.  
  33. int main(void)
  34. {
  35. 	FUNCTION_ADR( main )
  36. 	FUNCTION_ADR( add )
  37. 	FUNCTION_ADR( sub )
  38.  
  39. 	return 0;
  40. }
  41.  
Success #stdin #stdout 0.01s 1720KB
comments (?)
stdin 
Standard input is empty
stdout 
0x804843a
0x8048424
0x804842f
https://ideone.com/ZAHmu
language:
C99 (gcc 8.3)
created:
14 years ago
visibility:
public

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