How do I use range-based loops in C++11?

How do I use range-based loops in C++11?

Range-based loops in C++11 allow you to iterate over elements in a container easily. You can use the syntax: for (auto& element : container) { /* use element */ }.

Can you give me an example with a vector?

Sure! Here's an example:

#include <vector>
#include <iostream>

int main() {
    std::vector<int> numbers = {1, 2, 3, 4, 5};
    for (auto& num : numbers) {
        std::cout << num << ' ';
    }
    return 0;
}

What if I want to modify the elements in the vector?

You can modify the elements by using a reference in the loop. For example:

for (auto& num : numbers) {
    num *= 2; // This will double each element
}

Are there any limitations to range-based loops?

Yes, range-based loops cannot be used with certain types of containers that do not support iterators, and you cannot modify the container's structure (like adding or removing elements) while iterating.