Run program by C++ code (2 ways, Windows)

//---------------------------------------------------------
//Run in new console
//---------------------------------------------------------

#include <windows.h>    //You need shell32.lib for this one

bool main() {
    LPCWSTR szPath = TEXT("C:\\WINDOWS\\system32\\Calc.exe");

    HINSTANCE hRet = ShellExecute(
        HWND_DESKTOP,   //Parent window
        TEXT("open"),   //Operation to perform
        szPath,         //Path to program
        NULL,           //Parameters
        NULL,           //Default directory
        SW_SHOW);       //How to open

    /*
    The function returns a HINSTANCE (not really useful in this case)
    So therefore, to test its result, we cast it to a LONG.
    Any value over 32 represents success!
    */

    if((LONG)hRet <= 32)
    {
        MessageBox(HWND_DESKTOP,TEXT("Unable to start program"),TEXT(""),MB_OK);
        return true;
    }
    system("pause");
    return true;
}

//---------------------------------------------------------
//Run inside console
//---------------------------------------------------------

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

bool main() {
    WinExec("C:\\WINDOWS\\system32\\Calc.exe",SW_SHOW);
    system("pause");
    return true;
}