How to embed an exe file into another exe file as a resource in C++?

Question

I am trying to use a pre-build .exe file as a resource in my C++ project, after searching I done the following steps:

Step1 Create a new C++ project and place the following code in the Source.cpp file

#include<iostream>
#include<Windows.h>
#include<fstream>
#define IDB_EMBEDEXE 52
using namespace std;
int main() {

    int count = 2;

    HRSRC hResource = FindResource(NULL, MAKEINTRESOURCE(IDB_EMBEDEXE), __TEXT("BINARY"));
    HGLOBAL hGlobal = LoadResource(NULL, hResource);
    size_t exeSiz = SizeofResource(NULL, hResource);
    void* exeBuf = LockResource(hGlobal);

    ofstream outfile((char*)exeBuf, ios::out | ios::binary);
    if (!outfile)
        exit(9);
    outfile.write((char*)exeBuf, exeSiz);
    system((char*)exeBuf);

    return 0;
}

Step2 Create a new resource file (.rc)
1- Project>Add new item
2- From Installed>Visual C++>Resource choose Resource File (.rc) let us name it Resource.rc

Step3 Edit the header file resource.h that has just created from Step2, add the following line to the header file:
#define IDB_EMBEDEXE 52

Step4 Edit the Resource.rc file by right click on it>Open with>Source Code (Text) Editor, add the following code just after the first #include statment (i.e. after #include "resource.h"

#define IDB_EMBEDEXE 52
IDB_EMBEDEXE    BINARY      "C:\\Users\\Almohandis\\source\\repos\\Project7\\sum2num.exe"

After doing exactly these steps, I still get the following error in the cmd (not in the Visual Studio):

'MZ' is not recognized as an internal or external command, operable program or batch file.

And the program ends with code 0

I think calling system() what causes the problem, especially the argument I passed.

Note that the binary representation of the sum2num.exe file starts with MZ....