#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
char first_name[20];
char last_name[20];
cout << "Enter your first name : ";
cin.getline(first_name, 20);
cout << "Enter your last name : ";
cin >> last_name;
strcat(last_name, ",");
strcat(last_name, first_name);
cout << "Here's the information in a single string: " << last_name << endl;
return 0;
}