Complete the following vectors utilizing the C++ :
1. Assume that the vector monthSales of integers has already been declared and that its elements contain sales data for the 12 months of the year in order (i.e., January, February, etc.).
Write a statement that writes to standard output the element corresponding to October.
Assume that the vector arr has been declared. In addition, assume that VECTOR_SIZE has been defined to be an integer that equals the number of elements in arr .
Write a statement that assigns the next to last element of the vector to the variable x ( x has already been declared).
3. Given an vector a , declared to contain 34 elements, write an expression that refers to the last element of the vector. Please do not use member function to solve this problem