A timer I made in C++

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

using namespace std;

int main()
{
    int minutes = 0;
    int hours = 0;
    int seconds = 0;
    int days = 0;

    while(true)
    {
        system("cls");
        time_t current = time(0);
        cout << ctime(&current) << endl;
        cout << "Days: " << days << endl;
        cout << "Hours: " << hours << endl;
        cout << "Minutes: " << minutes << endl;
        cout << "Seconds: " << seconds << endl;

        for(int i = 0; i < 1; i++)
        {
            seconds += 1;
        }

            if(seconds == 60)
            {
                minutes += 1;
                seconds = 0;
            }
            if(minutes == 60)
            {
                hours += 1;
                minutes = 0;
            }
            if(hours == 24)
            {
                days += 1;
                hours = 0;
            }
            Sleep(1000);
    }
}