system() - как вывести в одну строку?

system("@echo on \n");
        system("set DESKTOP_KEY=HKCU\\Control panel\\Desktop \n");
        system("set RUNONCE_KEY=HKCU\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\RunOnce \n");
        system("set RUNONCE_DATA=reg add \"\"\"%DESKTOP_KEY%\"\"\" /v ScreenSaveActive /d 1 /f \n");
        system("reg add %RUNONCE_KEY% /v SaverOnReboot /d \"%RUNONCE_DATA%\" /f \n");
        system("reg add \"%DESKTOP_KEY%\" /v ScreenSaveActive /d 0 /f \n");
        system("timeout /t 2");

system("@echo on
 
set DESKTOP_KEY=HKCU\Control panel\Desktop
set RUNONCE_KEY=HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce
set RUNONCE_DATA=reg add """%DESKTOP_KEY%""" /v ScreenSaveActive /d 1 /f
reg add %RUNONCE_KEY% /v SaverOnReboot  /d "%RUNONCE_DATA%" /f
reg add "%DESKTOP_KEY%" /v ScreenSaveActive /d 0 /f
 
timeout /t 2")

#include <iostream>
#include <iomanip>
 
using namespace std;
 
int main()
{
    cout << (R"(
@echo on
 
set DESKTOP_KEY = HKCU\Control panel\Desktop
set RUNONCE_KEY = HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce
set RUNONCE_DATA = reg add """%DESKTOP_KEY%""" / v ScreenSaveActive / d 1 / f
reg add % RUNONCE_KEY % / v SaverOnReboot / d "%RUNONCE_DATA%" / f
reg add "%DESKTOP_KEY%" / v ScreenSaveActive / d 0 / f
 
timeout / t 2)"
    );
}

        ::SetEnvironmentVariableA("RUNONCE_KEY", "HKCU\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\RunOnce");
        ::SetEnvironmentVariableA("RUNONCE_DATA", "reg add \"HKCU\\Control panel\\Desktop\" /v ScreenSaveActive /d 1 /f");
        system("reg add %RUNONCE_KEY% /v SaverOnReboot  /d \"%RUNONCE_DATA%\" /f");

        std::string DESKTOP_KEY = "HKCU\\Control panel\\Desktop";
        std::string RUNONCE_DATA = "reg add \"" +  DESKTOP_KEY + "\" /v ScreenSaveActive /d 1 /f");