С++ Типы

#include <iostream>

using namespace std;
union types{
  char Char;
  short Short;
  int Int;
  long int LongInt;
  long long int LongLongInt;
  long Long;
  long long LongLong;
  __int128 Int128;
  
  float Float;
  double Double;
  long double LongDouble;
};

int main()
{
  types T;
  
  cout << "Integer types:\n";
  cout << "\tchar = " << sizeof(T.Char) << " bytes\n";
  cout << "\tshort = " << sizeof(T.Short) << " bytes\n";
  cout << "\tint = " << sizeof(T.Int) << " bytes\n";
  cout << "\tlong int = " << sizeof(T.LongInt) << " bytes\n";
  cout << "\tlong long int = " << sizeof(T.LongLongInt) << " bytes\n";
  cout << "\tlong = " << sizeof(T.Long) << " bytes\n";
  cout << "\tlong long = " << sizeof(T.LongLong) << " bytes\n";
  cout << "\t__int128 = " << sizeof(T.Int128) << " bytes\n";
  cout << "Real types:\n";
  cout << "\tfloat = " << sizeof(T.Float) << " bytes\n";
  cout << "\tdouble = " << sizeof(T.Double) << " bytes\n";
  cout << "\tlong double = " << sizeof(T.LongDouble) << " bytes\n";
  return 0;
}

Integer types:
        char = 1 bytes
        short = 2 bytes
        int = 4 bytes
        long int = 8 bytes
        long long int = 8 bytes
        long = 8 bytes
        long long = 8 bytes
        __int128 = 16 bytes
Real types:
        float = 4 bytes
        double = 8 bytes
        long double = 16 bytes