#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;
}
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