How do I iterate through a list in C++?

How do I iterate through a list in C++?

You can use a for loop or a range-based for loop to iterate through a list in C++. Would you like an example?

Yes, please provide an example using a vector.

Sure! Here's a simple example:

#include <iostream>
#include <vector>

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

This will print the numbers from the vector.

What if I want to modify the elements while iterating?

You can use a traditional for loop with an index to modify elements. Here's an example:

for (size_t i = 0; i < numbers.size(); ++i) {
    numbers[i] *= 2; // Double each element
}

This will modify the original vector.

Can I use iterators instead?

Absolutely! You can use iterators like this:

for (auto it = numbers.begin(); it != numbers.end(); ++it) {
    *it *= 2; // Double each element
}

This is a flexible way to iterate and modify elements.