#includeIn this example, we have created an atomic variable `a` of type `int` initialized to the value 10. We use the std::atomic_store function to store a new value of 20 to the variable safely and atomically. Finally, we print the new value of the variable to the console. The std::atomic_store function is a part of the atomic operations library in C++, which provides atomic operations for various data types that are commonly used in concurrent programming.#include int main() { std::atomic a{10}; std::cout << "Initial value: " << a << std::endl; // Store a new value atomically std::atomic_store(&a, 20); std::cout << "New value: " << a << std::endl; return 0; }