school-web | http : //server.dairoot.cn/

First of all, your function has "div" that is not defined anywhere.

Second, you can use this code to toggle the visibility of your logo:

So your C++ program should collect params required and generate valid HTTP POST request.

First you should inspect how that POST request looks like. One of possible ways to do so is using browser developer tools, network tab:

Inspect all headers and bodies. See how these things work and try to make hardcoded request and send it from your C++ program using some HTTP library.

It might authenticate your user and return token or other value that you might use to authenticate requests from your program, and then for other requests include these headers so you can act as a user and fetch user content.

This also depends on authentication implementation, some strategies allow you to do so while some are protected. But I successfully used this technique on production-steady application. I could send various cURL requests and visit pages from my terminal acting as logged in user without logging in or using browser at all. (I didn't login because I just "stole" session from already logged in (and probably remembered) user). In your case you need to login first to obtain these headers (also using your C++ HTTP lib) and then inject new headers to future requests that fetch data.