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  1. #include <stdio.h>
  2.  
  3. char lower(char c)
  4. {
  5. 	if ((c >> 5) == 0x2) {	// 上位3ビットが010ならば
  6. 		return c ^ 0x20;
  7. 	} else {
  8. 		return c;
  9. 	}
  10. }
  11.  
  12. char upper(char c)
  13. {
  14. 	if ((c >> 5) == 0x3) {	// 上位3ビットが011ならば
  15. 		return c ^ 0x20;
  16. 	} else {
  17. 		return c;
  18. 	}
  19. }
  20.  
  21. void printc(char c)
  22. {
  23. 	int	i;
  24.  
  25. 	for (i = 7; i >= 0; i--) {
  26. 		printf("%c", '0' + ((c >> i) & 1));
  27. 		if (i % 4 == 0) {
  28. 			printf("%c", i ? ' ' : '\n');
  29. 		}
  30. 	}
  31. }
  32.  
  33. int main()
  34. {
  35. 	char	c, ret;
  36.  
  37. 	scanf("%c", &c);
  38. 	printf("%c:", c);
  39. 	printc(c);
  40. 	ret = lower(c);
  41. 	printf("%c:", ret);
  42. 	printc(ret);
  43. 	ret = upper(c);
  44. 	printf("%c:", ret);
  45. 	printc(ret);
  46. 	return 0;
  47. }
  48.  
Success #stdin #stdout 0.02s 1724KB
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stdin
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q
stdout
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q:0111 0001
q:0111 0001
Q:0101 0001
https://ideone.com/Kq2Sy
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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