Range-based for loops

In C++, range-based for loops provide a concise and practical mechanism for iterating over containers such as std::vector. Armed with knowledge about std::vector operations and the std::begin and std::end functions, it’s evident that range-based for loops offer a streamlined traversal technique.

Traditional iteration over a vector necessitates declaring an iterator, initializing it to the container’s start, and updating it to progress to the end. Although this method works, it requires careful management and is prone to errors. Range-based for loops present a more efficient solution.

Overview of range-based for loops

The following code demonstrates the basic structure of a range-based for loop:

std::vector<int> numbers = {1, 2, 3, 4, 5};
for (int num : numbers) {
  std::cout << num << " ";
}

In this example, every integer within the numbers vector is printed. This approach eliminates the need for...