Please help me to automatically update A record using DNS

dns

#1

In windows, I want to try to automatically update the www record with a single line of code, I don’t know how to achieve it?
Or use CMD to update.
The main thing I am a newbie, I don’t know how to do this update, it is not as simple as dns.he.net, cloudns.net
Ask everyone to help me.

Update DNS record
PUT https://api.cloudflare.com/client/v4/zones/2ab5fc572848c9c844568c23bd9aeef9/dns_records/:identifier