Large factorial in c++

#1

please explain this line
int *a=new int[1000];

as till now i know we create array in java by new keyword so please explain this line

#2

hello dilip,
please refer these resources

https://www.tutorialspoint.com/how-to-create-a-dynamic-array-of-integers-in-cplusplus-using-the-new-keyword

http://www.cplusplus.com/doc/tutorial/dynamic/

#3

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