Using Range-Based For Loops in C++

Range-based for loops provide a simpler syntax for iterating over elements in a range. Using a range-based for loop involves two steps:

1. Declare the Loop: Use the for keyword followed by the element type, a reference if needed, and the range.
2. Access Elements: Inside the loop, you can access each element directly.

Here's an example:

1#include <vector>
2#include <iostream>
3
4int main() {
5  std::vector<int> Vector{1, 2, 3};
6
7  for (const int& x : Vector) { // Using const reference
8    std::cout << x << ", ";
9  }
10}

11, 2, 3,

Using a reference (const int& x) avoids copying elements, which is beneficial for large or complex types.