A short string demonstration.
#include <iostream>
#include <string>
using namespace std;
   
int main()
{
  string str1("A");
  string str2("B");
  string str3("O");
  string str4;
   
  str4 = str1;
  cout << str1 << "\n" << str3 << "\n";
   
  str4 = str1 + str2;
  cout << str4 << "\n";
   
  str4 = str1 + " to " + str3;
  cout << str4 << "\n";
   
  if(str3 > str1) 
     cout << "str3 > str1\n";
  if(str3 == str1+str2)
    cout << "str3 == str1+str2\n";
   
  str1 = "This is a null-terminated string.\n";
  cout << str1;
   
  string str5(str1);
  cout << str5;
   
  cout << "Enter a string: ";
  cin >> str5;
  cout << str5;
   
  return 0;
}