C++ assignment help, please provide comments!!

1.Write a code snippet that asks the user to enter how many scores will be input and allocates an array with the requested capacity. Then ask the user again and allocate a new array using the same variable used for the previous array. What should you do to avoid leaking the memory of the previous array?

2 Write a function named combine that takes two int arrays and their lengths and returns a new array that contains all the elements in arr1 followed by the elements in arr2. Provide client code that calls the function and prints all the elements.