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  1. #include <stdio.h>
  2. #define SET_BIT(x, n) ( (x) |= (1<< (n)) )
  3. #define CLR_BIT(x, n) ( (x) &= (~(1<< (n))))
  4. #define CHK_BIT(x, n) ( ((x) & (1<< (n)))!=0 )
  5. #define FLIP_BIT(x, n) ( (x) ^= (1<< (n)) ) 
  6.  
  7. int main(void) {
  8. 	static int a=0x12345678;
  9. 	SET_BIT(a, 3);
  10. 	printf("SET_BIT:a=0x%8x\n",a);
  11. 	CLR_BIT(a, 3);
  12. 	printf("CLR_BIT:a=0x%8x\n",a);
  13. 	CHK_BIT(a, 3);
  14. 	printf("CHK_BIT:a=0x%8x\n",a);
  15. 	FLIP_BIT(a, 3);
  16. 	printf("FLIP_BIT:a=0x%8x\n",a);
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 2168KB
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stdin
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Standard input is empty
stdout
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SET_BIT:a=0x12345678
CLR_BIT:a=0x12345670
CHK_BIT:a=0x12345670
FLIP_BIT:a=0x12345678
https://ideone.com/xEmCpX
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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