1. A three-dimensional vector has the form: A = (x, y, z) can be represented as: struct VECTOR { double x; double y; double z; }; given the vectors: A = (a, b, c) and B = (d, e, f ) Example: (5, 6, 2) (3, 1,9) Their sum is: A + B = (a + d, b + e, c + f) Example: (5+3,6 + 1, 2 +9) = (8,7,11) Their scalar product is: A B = a x 4 + b x e + c a f (result is a scalar) example: 5 X 3 + 6 x 1 + 2 x 9 = 39 Write the complete definition code for the functions: calc_sum computes and returns the sum of two vectors (PASS THE RESULT BACK USING AN ARGUMENT) 10 points