Too many initializer value eror - c++

Question

I am just a beginner in coding. I know the basics of c++ and c#. I was making a dll injector. I also followed a tutorial for a part. One part of the thing I have from the tutorial has an error and it is "Too many initializer values". I don't know what that means and why it is there. The error is at the nullptr in the next line
void* allocated_memory(h_process, nullptr, MAX_PATH, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
It is at the first nullptr. If I remove that nullptr then I get the error at the MAX_PATH
biggest part of code:
#include <iostream>
#include <Windows.h>
#include <string>
#include <thread>
#include <libloaderapi.h>
void get_id(const char* windows_title, DWORD &process_id)
{
GetWindowThreadProcessId(FindWindow(NULL, windows_title), &process_id);
}
void error(const char* error_title, const char* error_message)
{
MessageBox(NULL, error_message, error_title, NULL);
exit(-1);
}
bool file_exists(std::string file_name)
{
struct stat buffer;
return (stat(file_name.c_str(), &buffer) == 0);
}
int main()
{
DWORD proc_id = NULL;
char dll_path(MAX_PATH);
const char* dll_name = "PW";
const char* window_title = "Pixel Worlds";
if (!file_exists(dll_name))
{
error("file_exists", "Something went wrong");
}
HANDLE h_process = OpenProcess(PROCESS_ALL_ACCESS, NULL, proc_id);
void* allocated_memory(h_process, nullptr, MAX_PATH, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
HANDLE h_thread = CreateRemoteThread(h_process, nullptr, NULL, LPTHREAD_START_ROUTINE(LoadLibraryA), allocated_memory, NULL, nullptr);
CloseHandle(h_process);
VirtualFreeEx(h_process, allocated_memory, NULL, MEM_RELEASE);
MessageBox(NULL, "Successfully injected", "Success", NULL);
}

Answer 1

You appear to be trying to use the VirtualAllocEx WinAPI routine but you have not named that function in your attempted call, which is just incorrect syntax.
In place of the line:
void* allocated_memory(h_process, nullptr, MAX_PATH, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
you need to declare your void* pointer and allocate the memory it points to with a call like the following:
void* allocated_memory = VirtualAllocEx(h_process, nullptr, MAX_PATH, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);