Question

How to define and use two dimension object array in C++

Answer 1

#include <iostream>

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

class Test {
	double a, b;
public:
	Test(double _a, double _b) {
		a = _a;
		b = _b;
	}
	void print() {
		cout << a << " : " << b << endl;
	}
};

int main()
{
	Test o[2][3] = {
		Test(1, 1), Test(2, 2),
		Test(3, 3), Test(4, 4),
		Test(5, 5), Test(6, 6)
	};

	for (int i = 0; i < 2; i++)
	{
		for (int j = 0; j < 3; j++)
			o[i][j].print();
		cout << endl;
	}

	return 0;
}


/*
run:

1 : 1
2 : 2
3 : 3

4 : 4
5 : 5
6 : 6

*/

 

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Answer 2

#include <iostream>

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

class Test {
	int n;
public:
	Test(int _n) { n = _n; }
	int get() { return n; }
};

int main()
{
	Test o[3][2] = {
		1, 2,
		3, 4,
		5, 6
	};

	for (int i = 0; i < 3; i++) {
		cout << o[i][0].get() << " : " << o[i][1].get() << endl;
	}

	return 0;
}


/*
run:

1 : 2
3 : 4
5 : 6

*/

 

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