#includeIn this example, we create a string "hello world" and print it before the clear function is called. After calling the clear function, we print the string again and it is empty. This function is a part of the C++ standard library.#include int main() { std::string str = "hello world"; std::cout << "Before clear: " << str << std::endl; str.clear(); std::cout << "After clear: " << str << std::endl; return 0; }