C++ Batarya Yüzdesi

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

//message box
template<typename T>
vo id alert(T item){
     std::ostringstream os;
    os<<item;
    MessageBoxA(NULL, os.str().c_str(), "Reminder!", MB_OK | MB_ICONINFORMATION);
}

//Getting the battery lvl
int getBatteryLevel(){
    SYSTEM_POWER_STATUS status;
    GetSystemPowerStatus(&status);
    return status.BatteryLifePercent;
}

int main(){
    static std::string t = "Batarya \% 100";
    //Actually I'm not sure about this implementation. Gonna try to improve this.
    while(true){
    int x = getBatteryLevel();
        if(x == 100){
            alert(t);
            break;
        }else{
            Sleep(20 * 60000);
        }
    }
    return 0;
}