Binary representation of an int type value with bitset::to_string

Get the binary representation of an integral type using bitset's to_string method:

#include <bitset>
#include <iostream>
#include <string>

template <typename T>
std::string getBinary(T t) {
  unsigned long val = t;
  std::bitset<8 * sizeof t> bits(val);
  return bits.to_string();
}

int main() {
  using namespace std;
  while (cin) {
    unsigned short x;
    cin >> x;
    cout << getBinary(x) << '\n';
  }
}