#includeIn this example, we initialize the `myString` variable with the string "Hello". We then use the `IsNull()` function to check whether the string object is null or empty. Since the string contains the "Hello" string, the output will be "My string is not null or empty." Next, we set `myString` to an empty string (""). We then use the `IsNull()` function again to check whether the string object is null or empty. Since the string is empty, the output will be "My string is null or empty." Overall, the `IsNull()` function is useful for verifying that a string object is not null or empty before performing any additional string manipulations.#include int main() { TString myString = "Hello"; if (!myString.IsNull()) { std::cout << "My string is not null or empty.\n"; } myString = ""; if (myString.IsNull()) { std::cout << "My string is null or empty.\n"; } return 0; }