windows check battery status in c++

#include <windows.h>
#include <iostream>
 
#define UNKNOWN         0xFFFFFFFF
 
using namespace std;
 
int main() {
        SYSTEM_POWER_STATUS status;
 
        GetSystemPowerStatus( &status );
        int life = status.BatteryLifePercent;
        int secs = status.BatteryLifeTime;
 
        cout << life << "%   ->   ";
        switch (status.BatteryFlag) {
               case 1: cout << "High";
                    break;
               case 2: cout << "Low";
                    break;
               case 4: cout << "Critical";
                    break;
               case 8: cout << "Charging";
                    break;
               case 128: cout << "No system battery";
                    break;
               case 256: cout << "Unknown status";
                    break;
        }
 
        if (secs == UNKNOWN) {
                cout << endl << "Amount of time remaining is unkown";
        }
        else cout << endl << secs << " seconds remaining";
 
        Sleep( 2000 );
        return 0;
}