/*-----------------------------------------------
 Contract: repeat3: string -> string

 Purpose: return a new string that is <word> repeated
          three times

 Examples: for string greeting = "hello";
           repeat3(greeting) == "hellohellohello" 

 by: Sharon M. Tuttle
 last modified: 12-7-05
 -------------------------------------------------*/

#include <string>
using namespace std;

string repeat3(string word)
{
    // + works with standard string class instances;
    //    it concatenates, or joins, them
    return word + word + word;
}