I DO NOT ACCEPT INVITATIONS FROM TRADERS

#include <iostream>
using namespace std;
int main ()
{
int a, i;
cout<<"Podaj jakąkolwiek liczbę dodatnią oraz przy tym całkowitą";
cin>>a;
for(i=a;i>=0;i--)
cout<<i<<endl;
}

Computer configs:

Graphics card : ASUS RX 580 STRIX (VRAM 8 GB)
CPU: Intel core i5 8400 6x 2,80GH 6 threads
RAM: 8GB DDR4 2400 MHz
Motherboard: ASUS Prime H-310 PLUS
Operating system: Windows 10 Home
Monitor: BENQ 21.5" LED GL2240
Headphones: Razer Kraken Mobile Neon Green
Mouse: SteelSeries rival 110
Keyboard:Genesis Thor 300
Pad: bloody SPECTER CLAW (350x280x4)
Microphone: Zalman ZM-MIC1 (Tie microphone)
Speakers: Creative A220
Webcam: Trust exis
Desk: GAMING DESK FROM IKEA 3000X
Chair: SUPER GAMING CHAIR FROM LIVING ROOM 3000X