Question

How to store a class object in a vector with C++

Answer 1

#include <iostream>
#include <vector>

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

class Test {
	int n;
public:
	Test() { n = 0; }
	Test(int _n) { n = _n; }
	Test &operator=(int _n) {
		n = _n; 
		return *this;
	}
	int get() { return n; }
};

int main()
{
	vector<Test> vec;

	for (int i = 0; i < 5; i++)
		vec.push_back(Test(i * 2));

	for (int i = 0; i < vec.size(); i++)
		cout << vec[i].get() << " ";
	cout << endl;

	for (int i = 0; i < vec.size(); i++)
		vec[i] = vec[i].get() * 5;

	for (int i = 0; i < vec.size(); i++)
		cout << vec[i].get() << " ";
	cout << endl;

	return 0;
}


/*
run:

0 2 4 6 8
0 10 20 30 40

*/

 

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