Question

what do you mean by login and logout

Answer 1

$\mathbb{\red{\huge{Hey\:mate}}}$☺️
$\boxed{Here\:is\:your\:@nswer}$
━━━━━━━━━━━━━━━━━━━$\mathfrak{\green{Answer.}}$Loging out means to end access to a computer system or a website. Logging out informs the computer or website that the current user wishes to end the login session. Log out is also known as log off, sign off or sign out.
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$\huge{\bf{ \orange {\fbox{\underline{ \color{blue}{Follow\: Me}}}}}}$

Answer 2

login is entering into a website ,logout is exiting out of the website