#includeint main() { std::basic_string str = "Hello, world!"; return 0; }
#includeThis code creates two basic_string objects named str1 and str2 that hold the values "Hello" and " world!", respectively. The + operator is used to concatenate the two strings and store the result in a new basic_string object named result. The resulting string, "Hello world!", is then printed to the console. The basic_string data type is part of the C++ standard library, which is typically included as part of the compiler package.#include int main() { std::basic_string str1 = "Hello"; std::basic_string str2 = " world!"; std::basic_string result = str1 + str2; std::cout << result << std::endl; return 0; }