What is C++ indexing and how does it work?

What is C++ indexing and how does it work?

C++ indexing refers to accessing elements in data structures like arrays or vectors using an index. It allows you to retrieve or modify data efficiently.

Can you give me an example of indexing in an array?

Sure! If you have an array like int arr[5] = {10, 20, 30, 40, 50};, you can access the first element using arr[0], which will return 10.

What happens if I use an index that is out of bounds?

Using an out-of-bounds index can lead to undefined behavior, which may cause your program to crash or return garbage values.

How can I avoid out-of-bounds errors in C++?

You can avoid out-of-bounds errors by always checking the index against the size of the array or using data structures like std::vector that provide bounds checking.