Question

I need basic a C++ program that covers ANY of the following concepts:

  Smart Pointers, or,

Multithreading, or,

Regular Expressions

OR any GUI based C++ application (preferably using QT) ; FLTK also helps.

Thanks.

Answer 1

Okey, Smart Pointer C++ program--

#include <iostream>

using namespace std;

class SmartPtr

{

int* ptr;

public:

  explicit SmartPtr(int* p = NULL) { ptr = p; }

~SmartPtr() { delete (ptr); }

int& operator*() { return *ptr; }

};

int main()

{

SmartPtr ptr(new int());

*ptr = 20;

cout << *ptr;

return 0;

}