c++

std::string addStar(const std::string &str); // Task: Given a string, compute recursively a new string where all the adjacent // Pre: str is a string (may be empty). // Post: a correctly starred string is returned // Examples: //.addStar("hello") Xh*e*W*o" /1 addStar("abc")"axb*c" // addStar("ab" )- "a*b