What are the possible problems if I declare a bunch of data types and never use them? Do they take up a lot of memory? Will they slow run time? If it is an array do I have to delete it at the end of the program? What if the array is defined inside a class and never used? Do I still have to delete it?
void function1();//function that initializes darray
void function2();//function that initializes darray2 with different parameters, may not be used.