c# - what is the practical use of void datatype and void pointer? -


void variable has nothing , void pointer can pointed casting. void pointer used when don't know , of data type want point. of void variable?

any practical example?

in c void can't considered data type, keyword used placeholder in place of data type show there no data.

for example consider function void f(void);. here keyword void used mean absence of parameters passed , returned values.

but void *ptr; different in meaning.

this declares pointer without specifying data type pointing to.


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