What is std::atomic in C++11 and how do I use it?

What is std::atomic in C++11?

std::atomic is a template class in C++11 that provides atomic operations for variables, ensuring thread safety.

How do I declare an atomic variable?

You can declare an atomic variable using std::atomic<Type> varName;, where Type is the data type.

Can you give me an example of using std::atomic?

Sure! Here's a simple example:

#include <atomic>
#include <iostream>

std::atomic<int> counter(0);

void increment() {
    counter++;
}

int main() {
    increment();
    std::cout << counter.load() << std::endl;
}

What are the benefits of using std::atomic?

The benefits include avoiding data races, ensuring memory consistency, and providing lock-free operations.