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  1. union {
  2.         double number;
  3.         long long inumber;
  4.         char bytes[sizeof(double)];
  5.     };
  6.     number = 0;
  7.     char sign3 = 1;
  8.     int dotPos2 = -1;
  9.     string doubleEnter = "";
  10.     system("cls");
  11.     cout << "DOUBLE " << numberSystem << " system\n";
  12.     printAlphabet(numberSystem);
  13.     cout << "Enter number: ";
  14.     fractionalNumberEnter(doubleEnter, numberSystem, sign3, dotPos2);
  15.     if (dotPos2 != -1) {
  16.         for (int i = 0; i < dotPos2; i++) {
  17.             if (doubleEnter[i] - '0' < 10)
  18.                 number += (doubleEnter[i] - '0') * degree(dotPos2 - i - 1, numberSystem);
  19.             else {
  20.                 if (doubleEnter[i] <= 'Z') {
  21.                     number += (doubleEnter[i] - '0' - 7 /*number that deletes the difference between the character A and number 10*/) * degree(dotPos2 - i - 1, numberSystem);
  22.                 }
  23.                 else {
  24.                     number += (doubleEnter[i] - '0' - 7 - 6 /*number that deletes the difference between the character a and 10*/) * degree(dotPos2 - i - 1, numberSystem);
  25.                 }
  26.             }
  27.         }
  28.         for (int i = dotPos2 + 1; i < doubleEnter.length(); i++) {
  29.             if (doubleEnter[i] - '0' < 10)
  30.                 number += (doubleEnter[i] - '0') * degree(dotPos2 - i, numberSystem);
  31.             else {
  32.                 if (doubleEnter[i] <= 'Z') {
  33.                     number += (doubleEnter[i] - '0' - 7 /*number that deletes the difference between the character A and number 10*/) * degree(dotPos2 - i, numberSystem);
  34.                 }
  35.                 else {
  36.                     number += (doubleEnter[i] - '0' - 7 - 6 /*number that deletes the difference between the character a and number 10*/) * degree(dotPos2 - i, numberSystem);
  37.                 }
  38.             }
  39.         }
  40.     }
  41.     else {
  42.         for (int i = 0; i < doubleEnter.length(); i++) {
  43.             if (doubleEnter[i] - '0' < 10) {
  44.                 number += (doubleEnter[i] - '0') * degree(doubleEnter.length() - i - 1, numberSystem);
  45.             }
  46.             else {
  47.                 if (doubleEnter[i] <= 'Z') {
  48.                     number += (doubleEnter[i] - '0' - 7 /*number that deletes the difference between the character A and number 10*/) * degree(doubleEnter.length() - i - 1, numberSystem);
  49.                 }
  50.                 else {
  51.                     number += (doubleEnter[i] - '0' - 7 - 6 /*number that deletes the difference between the character A and number 10*/) * degree(doubleEnter.length() - i - 1, numberSystem);
  52.                 }
  53.             }
  54.         }
  55.     }
  56.     number *= sign3;
  57.     cout << "\ndecimal notation: " << fixed << number << endl;
  58.     long long temperal;
  59.     temperal = inumber;
  60.     cout << "binary notation: ";
  61.     bit_print(bytes, sizeof(double), hConsole);
  62.     cout << endl;
  63.     cout << "Dou you want to change some bits?\n[y] - yes\n[n] - no";
  64.     char c;
  65.     c = 0;
  66.     do {
  67.         c = _getch();
  68.     } while (c != 'y' && c != 'n');
  69.     cout << endl;
  70.     if (c == 'y') {
  71.         bitChange(temperal, hConsole);
  72.         inumber = temperal;
  73.         cout << "changed demical notation: " << number << endl;
  74.         cout << "changed binary notation: ";
  75.         bit_print(bytes, sizeof(double), hConsole);
  76.         cout << endl;
  77.     }
  78.     cout << "Press ESC to exit...";
  79.     char exitcode;
  80.     do {
  81.         exitcode = _getch();
  82.     } while (exitcode != 27);
  83.     system("cls");
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