Answer Posted / somnath basak (somu)

GUI stands for Graphics User Interface. That means it a kind
interface which allows an user to interact with the system
by dint of Graphics and other symbolic items i.e. icons. In
GUI mode user has to frequently use the pointing device to
carry on their processes to accomplish.

CUI stands for Character User Interface. This type of
interface allows an user to interact with the system by dint
of characters only in the form of code or syntaxes.

The basic differences lies between GUI and CUI is that Gui
is more reliable and convenient to user than that of CUI
because in CUI mode user has to remembered a huge no. of
syntaxes which is quite not possible to handle with. But as
GUI is having the symbols and icons so it gets quite
attractive and handy for an user to interact with the
system. This GUI processes and their processing
functionality provides the extra convenience during system
running.

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