Newbie question - can a program uninstall and then re-install a new version the program?

[peaceatwork]

forgive the ignorance of the question if obvious but

situation-
existing installed program written in C++
runs at start up in the notification tray

Proposal-
write and execute a program in c# that
1- uninstalls and deletes the c++ program, including removing the start up command and
2- installs a new, similar program written in c#

that is possible, isn't it?

thanks,