i mean as vector v={1,2,3,4,5}; i am getting error?
How to define vector in prdefine?
Hey Kailash,
You need to define the size and datatype of the vector first.
or if you’re trying to do it other way around.
Try something like
vector v{1,2,3,4,5};
Hope this helps. 
@kailash_01 Please let me know if you’ve any further doubts in defining a vector,
If not you may mark the doubt as resolved and if it helped you can mark the rating accordingly. 
vector v;
v.reserve(5);
vector v{1,2,3,4}; IT IS SHOWING ERROR???