array vs vector vs list

Question

I am maintaining a fixed-length table of 10 entries. Each item is a structure of like 4 fields. There will be insert, update and delete operations, specified by numeric posi

Answer 1

Prefer an std::vector over and array. Some advantages of vector are:

• They allocate memory from the free space when increasing in size.
• They are NOT a pointer in disguise.
• They can increase/decrease in size run-time.
• They can do range checking using at().
• A vector knows its size, so you don't have to count elements.

The most compelling reason to use a vector is that it frees you from explicit memory management, and it does not leak memory. A vector keeps track of the memory it uses to store its elements. When a vector needs more memory for elements, it allocates more; when a vector goes out of scope, it frees that memory. Therefore, the user need not be concerned with the allocation and deallocation of memory for vector elements.