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Also, there is really no need to write the loop yourself.


int sub_vector_length = 2;
vector<int> sub_vector(myvector.begin(), myvector.begin() + sub_vector_length);

If the compiler's...

Just pass a pointer to the first item in the vector you want to use in the function. A vector is a wrapper for a contiguous, dynamic array of T, so there is no need to be copying anything.

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