template<typename T>
void show_binrep(const T& a)
{
   const char* beg = reinterpret_cast<const char*>(&a);
   const char* end = beg + sizeof(a);
   while(beg != end)
       std::cout << std::bitset<CHAR_BIT>(*beg++) << ' ';
   std::cout << '\n';
}
int main(){
unsigned int lUnsigned = 0x80000001;
short lSigned1 = (short)lUnsigned;                  
// short lSigned3 = reinterpret_cast<short>(lUnsigned);

   show_binrep(lUnsigned);
   show_binrep(lSigned1);

}