33 lines
789 B
C++
33 lines
789 B
C++
// smrtptrs.cpp -- using three kinds of smart pointers
|
|
#include <iostream>
|
|
#include <string>
|
|
#include <memory>
|
|
|
|
class Report
|
|
{
|
|
private:
|
|
std::string str;
|
|
public:
|
|
Report(const std::string s) : str(s) { std::cout << "Object created!\n"; }
|
|
~Report() { std::cout << "Object deleted!\n"; }
|
|
void comment() const { std::cout << str << "\n"; }
|
|
};
|
|
|
|
int main()
|
|
{
|
|
{
|
|
std::auto_ptr<Report> ps (new Report("using auto_ptr"));
|
|
ps->comment(); // use -> to invoke a member function
|
|
}
|
|
{
|
|
std::shared_ptr<Report> ps (new Report("using shared_ptr"));
|
|
ps->comment();
|
|
}
|
|
{
|
|
std::unique_ptr<Report> ps (new Report("using unique_ptr"));
|
|
ps->comment();
|
|
}
|
|
// std::cin.get();
|
|
return 0;
|
|
}
|