#includeIn this example, we first create a JSON string `jsonStr` that contains a key-value pair for a person's name. We then parse this JSON string using the `Json::Reader` class to create a `Json::Value` object called `root`. Next, we extract the value of the "name" key from the `root` object and store it into a string variable called `name`. We also use the `isString` method to determine whether the value of the "name" key is a string or not and store the result into a boolean variable called `isNameString`. Finally, we print out the results to the console to verify that the string value of the "name" key has been extracted correctly and that the `isString` method has correctly identified it as a string. In this example, the C++ JSON library is used to parse, manipulate and extract values from JSON strings in C++ code.#include "json/json.h" int main() { std::string jsonStr = "{\"name\": \"John\"}"; Json::Value root; Json::Reader reader; bool parsingSuccessful = reader.parse(jsonStr, root); if (!parsingSuccessful) { std::cout << "Failed to parse JSON" << std::endl; return 1; } std::string name = root["name"].asString(); bool isNameString = root["name"].isString(); std::cout << "Name is a string: " << isNameString << std::endl; std::cout << "Name value: " << name << std::endl; return 0; }