What are some examples of STL vectors in C++?

What are some examples of STL vectors in C++?

STL vectors are dynamic arrays in C++. Here are a few examples:

1. Basic Declaration: std::vector<int> numbers;
2. Initialization: std::vector<std::string> names = {"Alice", "Bob", "Charlie"};
3. Adding Elements: numbers.push_back(10);
4. Accessing Elements: int first = numbers[0];
5. Iterating: for (const auto& name : names) { std::cout << name << ' '; }

Would you like to see more detailed examples?

Yes, can you explain how to iterate through a vector?

Certainly! You can iterate through a vector using a range-based for loop or an index-based for loop. Here’s how:

1. Range-based for loop:

   for (const auto& element : myVector) {
       std::cout << element << ' ';
   }
   

2. Index-based for loop:

   for (size_t i = 0; i < myVector.size(); ++i) {
       std::cout << myVector[i] << ' ';
   }
   

Both methods will give you access to each element in the vector. Do you need examples of specific use cases?

Can you show me how to remove an element from a vector?

Absolutely! You can remove an element from a vector using the erase method. Here’s an example:

std::vector<int> numbers = {1, 2, 3, 4, 5};

// Remove the element at index 2 (which is '3')
numbers.erase(numbers.begin() + 2);

// Now numbers contains: 1, 2, 4, 5

You can also use remove in combination with erase to remove specific values. Would you like to know more about that?