move a vector from a vector2D to another one

move_vec_to_vec.cpp

#include <iostream>
#include <vector>
#include <utility>
using namespace std;

void PrintVec2D(vector<vector<int>> &d) {
	for (int i = 0; i < d.size(); i++) {
		cout << "subvec " << i << ": ";
		for (int j = 0; j < d[i].size(); j++)
			cout << d[i][j] << " ";
		cout << endl;
	}
}

int main() {
	vector<vector<int>> t;
	vector<vector<int>> d;
	t.resize(5);
	d.resize(1);
	for (int i = 0; i < 5; i++) {
		for (int j = 0; j < 3; j++)
			t[i].push_back(i + j);
	}
	for (auto &f: t) {
		cout << "src" << endl;
		PrintVec2D(t);
		d[0] = move(f);
		cout << "des" << endl;
		PrintVec2D(d);
	}
	return 0;
}