The Waite Group's C++ Primer Plus, Third Edition

Chapter 15

1:
A1:	#include <string> using namespace std; class RQ1 { private: string st; // a string object public: RQ1() : st("") {} RQ1(const char * s) : st(s) {} ~RQ1() {}; // more stuff }; The explicit copy constructor, destructor, and assignment operator no longer are needed because the string object provides its own memory management.
2:
A2:	You can assign one string object to another. A string object provides its own memory management so that you normally don't have to worry about a string exceeding the capacity of its holder.
3:
A3:	#include <string> #include <cctype> using namespace std; void ToUpper(string & str) { for (int i = 0; i < str.size(); i++) str[i] = toupper(str[i]); }
4:
A4:	auto_ptr<int> pia= new int[20]; // wrong, ...