do anyone know how to write code to display time like in the window

You can do this with the functions in the <ctime> header file.

i don't know how to use function in <ctime> . can u give me example??

See http://www.cplusplus.com/reference/clibrary/ctime/ (each of the functions has an example to go with it when you click on it)

Otherwise google for ctime or time.h (which is the C version of the header, but it's the same functions).

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