Example of C++ shared pointers

shared_pointers.cc

#include <iostream>
#include <memory>

#include <assert.h>

using namespace std;

template <class Value>
class Output
{
public:
	Output(int count) {
		this->data_ = new Value[count];
		this->count_ = count;
		for(int i = 0; i < count; i++) {
			this->data_[i] = (Value)i;
		}
	};
	~Output() { delete[] this->data_; }
	Value getOutitem(int i) {
		assert(i >= 0 && i < this->count_);
		return this->data_[i];
	}
private:
	int count_;
	Value *data_;
};

class Pokus
{
public:
	Pokus() { vec_[0] = vec_[1] = vec_[2] = 0.0; };
	Pokus(double vec[3]) {
		this->vec_[0] = vec[0];
		this->vec_[1] = vec[1];
		this->vec_[2] = vec[2];
	}
	~Pokus() {};
	double getVecComp(int i) {
		assert(i>=0 && i<=2); return this->vec_[i];
	};
private:
	double vec_[3];
};

int main(int argc, char const *argv[])
{
	double vec[3] = {1.1, 2.2, 3.3};

	auto sp1 = make_shared<Pokus>(vec);
	auto sp2 = make_shared<Output<double>>(10);

	cout << "Vector[0]: " << sp1->getVecComp(0) << endl;
	cout << "Output[5]: " << sp2->getOutitem(5) << endl;

	return 0;
}

To compile this file with C++ source code using GCC use following command:

g++ -std=c++0x ./shared_pointers.cc