title: Unknown type name uint64_t and uint16_t uint8_t in Linux
body: <p>I'm trying to compile a program in Ubuntu environment but I'm having some error saying <code>unknown type name 'uint64_t'</code>, <code>unknown type name 'uint16_t'</code> even though I have included <code>cstdint</code> and any other requirements I believe. It seems like the C++ library support issue.</p>
  
  <p>Does anyone know how to fix this?</p>