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  1. #include <stdio.h>
  2.  
  3. typedef enum
  4. {
  5.     BASE_DECIMAL = 10,
  6.     BASE_HEXADECIMAL = 16,
  7.     BASE_BINARY = 2,
  8.     BASE_ENUM_COUNT = 3
  9. } Bases;
  10.  
  11. int Pow(int x, int exponent)   // TODO: should this be inline?
  12. {
  13.     int base_num = x;
  14.  
  15.     if(exponent)
  16.     {
  17.         for(int i = 1; i < exponent; i++)
  18.         {
  19.             x = x * base_num;
  20.         }
  21.         return x;
  22.     }
  23.     else
  24.     {
  25.         return 1;
  26.     }
  27. }
  28.  
  29. void
  30. IntToAscii(char *output_buffer, const int number, const Bases base) {
  31.     int num = number;
  32.     int temp_num = 0;
  33.     int digit = 0;
  34.     int total_digits = 0;
  35.     int divisor = 0;
  36.  
  37.     if (num == 0)
  38.     {
  39.         *output_buffer = '0';
  40.         return;
  41.     } else if(num < 0)
  42.     {
  43.         *output_buffer = '-';
  44.         output_buffer++;
  45.         num = num * -1;
  46.     }
  47.  
  48.     temp_num = num;
  49.     while (temp_num > 0) {
  50.         temp_num = temp_num / base;
  51.         total_digits++;
  52.     }
  53.  
  54.     total_digits = total_digits - 1;
  55.  
  56.     for (int x = total_digits; x >= 0; x--)
  57.     {
  58.         divisor = Pow(base, x);
  59.         digit = num / divisor;
  60.         if(digit < 10 || base == BASE_DECIMAL)
  61.         {
  62.             *output_buffer = (char)(digit + '0');
  63.         }
  64.         else if(base == BASE_HEXADECIMAL)
  65.         {
  66.             digit = digit - 10;
  67.             *output_buffer = (char)(digit + 'A');
  68.         }
  69.  
  70.         num = num - (digit * divisor);
  71.  
  72.         output_buffer++;
  73.     }
  74. }
  75.  
  76.  
  77. int main()
  78. {
  79.     char text[256] = {};
  80.     IntToAscii(text, 0x5eadbeef, BASE_HEXADECIMAL);
  81.     printf("%s\n", text);
  82. }
  83.  
  84.  
  85.  
  86.  
  87.  
  88.  
  89.  
  90.  
Success #stdin #stdout 0s 5280KB
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https://ideone.com/x9OzRu
language:
C++14 (gcc 8.3)
created:
10 days ago
visibility:
public

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