How to add a word to a hunspell session in the C language

#include <iostream>
#include <string>
#include <windows.h>

using namespace std;


HMODULE hHunspellLib = NULL;
HANDLE hHunspellHandle = NULL;

bool HunspellInit(const char* aff, const char* dic) {

	bool result = false;
	//Check the hunspell library has been initialised
	hHunspellLib = ::LoadLibrary("Hunspellx64");
	if (hHunspellLib == NULL)
	{
		DWORD dw = GetLastError();
		cout << "LoadLibrary failed, error code: " << hex << dw << dec << endl;
	}
	else
	{
		typedef HANDLE (*HunspellCreateFunc)(const char*, const char*);
		HunspellCreateFunc Hunspell_create = (HunspellCreateFunc)GetProcAddress(hHunspellLib, "Hunspell_create");
		if (Hunspell_create == NULL) {
			cout << "GetProcAddress failed for \"Hunspell_create\"" << endl;
		}
		else
		{
			hHunspellHandle = Hunspell_create(aff, dic);
			result = true;
		}
	}

	return result;
}

int HunspellAddWord(const char* Word2Add)
{
	typedef int(*HunspellAddWordFunc)(HANDLE, const char*);
	static HunspellAddWordFunc Hunspell_add = nullptr;

	int result = 0;
	if (Hunspell_add == nullptr)
	{
		Hunspell_add = (HunspellAddWordFunc)GetProcAddress(hHunspellLib, "Hunspell_add");
		if (Hunspell_add == nullptr) {
			cout << "GetProcAddress failed for\n\nHunspell_add" << endl;
			return result;
		}
	}
	else
	{
		result = Hunspell_add(hHunspellHandle, Word2Add);
	}
	return result;
}

int HunspellSpellWord(const char* Word2Spell)
{
	typedef int(*HunspellSpellWordFunc)(HANDLE, const char*);
	static HunspellSpellWordFunc Hunspell_spell = nullptr;

	int result = 0;
	if (Hunspell_spell == nullptr)
	{
		Hunspell_spell = (HunspellSpellWordFunc)GetProcAddress(hHunspellLib, "Hunspell_spell");
		if (Hunspell_spell == nullptr) {
			cout << "GetProcAddress failed for\n\nHunspell_spell" << endl;
			return result;
		}
	}
	else
	{
		result = Hunspell_spell(hHunspellHandle, Word2Spell);
	}
	return result;
}

int main()
{
	if (!HunspellInit("spelltest.aff", "spelltest.dic"))
	{
		return 1;
	}

	string input;
	while (true)
	{
		cout << "enter a word: ";
		cin >> input;
		if (input == "END")
			break;
		if (input == "ADD")
		{
			cout << "enter the word to add: ";
			cin >> input;
			int addresult = HunspellAddWord(input.c_str());
			cout << "add returned: " << addresult << endl;
		}
		else
		{
			int gorb = HunspellSpellWord(input.c_str());
			cout << (gorb == 1 ? "Correct" : "Wrong") << endl;
		}
	}

	return 0;
}

SET UTF-8
TRY esianrtolcdugmphbyfvkwzESIANRTOLCDUGMPHBYFVKWZ'

REP 2
REP f ph
REP ph f

5
mouse
handle
door
*pickle
tribulation

C:\Users\rjmac\source\repos\kandrTest\spelltest\Debug>undname ?add_word@HashMgr@@AEAAHPEBDHHPEAGH0_N@Z
Microsoft (R) C++ Name Undecorator
Copyright (C) Microsoft Corporation. All rights reserved.

Undecoration of :- "?add_word@HashMgr@@AEAAHPEBDHHPEAGH0_N@Z"
is :- "private: int __cdecl HashMgr::add_word(char const * __ptr64,int,int,unsigned short * __ptr64,int,char const * __ptr64,bool) __ptr64"

typedef int(__fastcall* HunspellAddWordFunc)(const char* word);


int HunspellAddWord(const char* Word2Add) {

	int result = -1;
	//Check the hunspell library has been initialised
	HMODULE hHunspellLib = ::LoadLibraryW(L"Hunspellx64");

	if (hHunspellLib == NULL) {
		DWORD dw = GetLastError();
		cout << "Hunspell library not initialized" << endl;
		return result;
	}

	if (Word2Add == NULL) {
		cout << "Word2Add is invalid for\n\nHunspellAddWord" << endl;
		return result;
	}

	HunspellAddWordFunc Hunspell_add = (HunspellAddWordFunc)GetProcAddress(hHunspellLib, "Hunspell_add");
	if (Hunspell_add == NULL) {
		cout << "GetProcAddress failed for\n\nHunspell_add" << endl;
		return result;
	}

	if (Hunspell_add != NULL) {
		result = Hunspell_add(Word2Add);
		cout << "result: " << result << endl;
	}
	return result;
}