C++ : C++ scanf %la returns 0

C++ : C++ scanf %la returns 0
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to reveal a secret feature to you, and now it's time to share it.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
After that, type the word 'awesome' on your keyboard.
You will see a flashing rainbow instead of a regular progress bar on YouTube.

Here's a short introduction about myself,
Nice to meet you, I am Delphi.
Allow me to support you in answering your questions.
C++ : C++ scanf %la returns 0
I am always open to chatting or receiving comments from you if you have more specific queries.
Don't hesitate to share your answer or insights on the answer by leaving a comment below.
Your answer will be recognized and valued, and I will 'heart' it to show my appreciation.
%la 0 C++ returns : C++ scanf