getline

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

int main() {
	string full_name;

	cout << "Please enter your name and surname:";
	getline(cin, full_name);
	cout << "Your full name is: " << full_name << endl;
	return 0;
}

Your full name is: Daenerys Stormborn of the House Targaryen,First of Her Name, the Unburnt, Queen of the Andals and the First Men, Khaleesi of the Great Grass Sea,Breaker of Chains, and Mother of Dragons