Namespace Alias Usage

#include <iostream>
using namespace std;

// Long vendor HAL namespace
namespace VendorMegaChipCorporationUltraSeries9000_HardwareClockControlModule {
    void enableClock()  { cout << "CLOCK ENABLED"; }
    void disableClock() { cout << "CLOCK DISABLED"; }
}

namespace ClockHAL = VendorMegaChipCorporationUltraSeries9000_HardwareClockControlModule;

int main() {
    int cmd;
    cin >> cmd;

    if(cmd == 1){
        ClockHAL::enableClock();
    }
    else if(cmd == 2){
        ClockHAL::disableClock();
    }
    return 0;
}

Solving Approach