Check if a bit is set

test_bit_set.cpp

#include <iostream>

bool test_bit_set(unsigned num, unsigned idx)
{
  return (num & (1 << idx)) != 0;
}

int main()
{
  for (unsigned n = 0; n < 8; n++)
  {
    for (unsigned i = 0 ; i < 8; i++)
    {
      std::cout << i << "th bit of " << n << " set : "
                << (test_bit_set(n, i) ? "true" : "false") << "\n";
    }
    std::cout << "\n";
  }
  
  return 0;
}