example.cpp

#include <iostream>
#include <map>
using namespace std;

struct person { std::string first, last; };

int main() {
	std::map<std::string, person> m;
	if (auto [_, was_inserted] = m.emplace("43662121", person{"Miles", "Rout"}); was_inserted) {
		std::cout << "Student 43662121 was added to the map";
	}
	return 0;
}