Answer:
#include <iostream>
#include <string>
int main() {
std::string firstName, lastName, result;
std::cout << "Enter your first name: ";
std::cin >> firstName;
std::cout << "Enter your last name: ";
std::cin >> lastName;
result = firstName + " " + lastName;
std::cout << "Full name: " << result << std::endl;
std::cout << "Length of the full name: " << result.length() << std::endl;
return 0;
}
Hope this helps!