string s1 = "Hello":
            string s2;

            s2 = s1;  // s2 gets a copy of s1.

         

            string s1 = "Hello";
            string s2 = "World";

            if ( s1 < s2 ) {
              cout << s1 " comes before " << s2 << endl;
            }

            string s1 = "Hello";
            string s2 = "World!";
            string s;

            s = s1 + ", " + s2;

            cout << s << endl;

            Output:  Hello, World!

• find

                  int pos;
                  string s = "Hello, World!";
  
                  pos = s.find("World"); // pos = 7
                  pos = s.find(',');     // pos = 5
                  pos = s.find("Cat");   // pos is = string::npos