This is code implemented inside the Bitcoin stack aswer

bitcoin-hash-public-key.cpp

/**
* Convert array bytes to string.
**/
std::string ToString(uint8_t bytes[Ripemd160::HASH_LEN]){
  std::string hashResult;
  std::stringstream stream;
  for(int i = 0; i < Ripemd160::HASH_LEN; i++){
      int valueInt = static_cast<int>(bytes[i]);
      stream << std::hex << std::setprecision(2) << std::setw(2) << std::setfill('0') << valueInt;
  }
  hashResult = stream.str();
  return hashResult;
}

/**
* Convert the public key to hash.
**/

void ToHashPublicKey(std::string pubKey)
{
  //TODO check if the string is valid.
  cout << "\n\n\n------------- Test for Bitcoin.stack question -------------" << endl;
  cout << "Public Key: " << "02b4632d08485ff1df2db55b9dafd23347d1c47a457072a1e87be26896549a8737\n";
  string keyTmp = "02b4632d08485ff1df2db55b9dafd23347d1c47a457072a1e87be26896549a8737";
  string flag = keyTmp.substr(0, 2);
  if(flag == "02"){
     cout << "Compressed with y event\n";
  }else if(flag == "03"){
     cout << "Compressed with y odd\n";
  }else{
    assert(flag == "04");
  }
  Bytes bytesTmp = hexBytes(keyTmp.c_str());

  //SHA256
  Sha256Hash shaHash = Sha256::getHash(bytesTmp.data(), bytesTmp.size());
  uint8_t result[Ripemd160::HASH_LEN];
  Ripemd160::getHash(shaHash.value, sizeof(shaHash), result);

  cout << "Hash Public key: " << ToString(result) << endl;
}

References

The reference of the project are off-topics here but I think without it this post can be fake, so I'm adding the reference of the library used to implement my code in this answer.

• Bitcoin-Cryptography-Library
• decompiler-bitcoin-script: this is my start project to undestend how bitcoin script work, so you can found the idea if you want implement other feature inside your work.