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  1. #define _CRT_SECURE_NO_WARNINGS  
  2. #include <stdio.h>
  3. #include <string.h>
  4. #define str_size 32/4
  5. #define bin_size 32/8
  6.  
  7. void htob(char hex[], unsigned char bin[]);
  8.  
  9. /*That HEX is type of string converts to binary.*/
  10. int main(void)
  11. {
  12. 	char string[str_size+2] = "" ; //if string include 0x(0X) that array need +2
  13. 	unsigned char bin[bin_size] = "";
  14.  
  15. 	printf("請輸入欲轉換之字串:");
  16. 	scanf("%s", string);
  17.  
  18. 	htob(string, bin);
  19.  
  20. 	printf("MSB  ");
  21. 	for (int i = bin_size-1; i >= 0; --i)
  22. 	{
  23. 		printf("%X  ", bin[i]);
  24. 	}
  25. 	printf("LSB\n");
  26.  
  27. 	system("pause");
  28. 	return 0;
  29. }//這裡跳出 Run-Time Check Failure #2 - Stack around the variable 'string' was corrupted.
  30.  
  31. void htob(char hex[], unsigned char bin[])
  32. {
  33. 	enum HAVE {NO,YES=2};
  34. 	enum HAVE have_0x=NO;//or 0X
  35.  
  36. 	int b = bin_size - 1;
  37. 	int h = 0;
  38. 	int odd=0;//輸入基數個hex字元數
  39. 	int	unfilled,temp, twice;
  40. 	unsigned char integer;
  41.  
  42. 	if (hex[h] == '0' && (hex[h + 1] == 'x' || hex[h + 1] == 'X'))//Whether have the input 0X/0x?
  43. 		have_0x = YES;
  44.  
  45. 	unfilled = str_size - (strlen(hex) - have_0x);
  46.  
  47. 	if (unfilled)
  48. 	{
  49. 		for (temp = 1; temp <= (unfilled / 2); ++temp,--b)//輸入未滿填則0
  50. 		{
  51. 			bin[b] = 0x00;
  52. 		}
  53. 		if (unfilled % 2)
  54. 		{
  55. 			odd = 1;
  56. 		}
  57. 	}
  58.  
  59. 	for (h=have_0x ; b>=0 && h<(int)strlen(hex) ; --b )
  60. 	{
  61. 		integer = 0x00;
  62. 		for (twice = 0; twice < 2;++twice)
  63. 		{
  64. 			if (hex[h] >= '0'&&hex[h] <= '9')
  65. 			{
  66. 				integer = integer * 16 + (hex[h] - '0');
  67. 				++h;
  68. 			}
  69. 			else if (hex[h] >= 'a'&&hex[h] <= 'f')
  70. 			{
  71. 				integer = integer * 16 + (hex[h] - 'a'+10);
  72. 				++h;
  73. 			}
  74. 			else if (hex[h] >= 'A'&&hex[h] <= 'F')
  75. 			{
  76. 				integer = integer * 16 + (hex[h] - 'A'+10);
  77. 				++h;
  78. 			}
  79. 			else
  80. 			{
  81. 				printf("輸入非法hex字元\n");
  82. 				++h;
  83. 			}
  84. 			if (odd)
  85. 				break;
  86. 		}
  87. 		bin[b] = integer;
  88. 		odd = 0;
  89. 	}
  90. }
  91.  
Success #stdin #stdout #stderr 0s 2160KB
comments (?)
stdin
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0x12345678
stdout
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請輸入欲轉換之字串:MSB  12  34  56  78  LSB
stderr
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sh: 1: pause: not found
https://ideone.com/cfYkLA
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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