Question

How to use this class pointer in C++

Answer 1

#include <iostream>

using std::cout;
using std::endl;

class Test {
	int n;
public:
	void set(int _n) { this->n = _n; }
	int get(void) { return this->n; }
};

int main(void) 
{
	Test o;

	o.set(13);

	cout << o.get() << endl;

	return 0;
}


/*
run:

13

*/

 

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Answer 2

#include <iostream>

using std::cout;
using std::endl;

class Test {
public:
	Test(int = 0);
	void print() const;
private:
	int n;
};

Test::Test(int _n) { n = _n; }

void Test::print() const
{
	cout << this->n << " " << (*this).n << endl;
}

int main()
{
	Test o(13);

	o.print();

	return 0;
}

/*
run:

13 13

*/

 

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