便利なのか微妙なところだ…。
#include <iostream> #include <vector> using namespace std; void f(vector< vector<int> >& vv_) { vector< vector<int> > vv = vv_; for (vector< vector<int> >::const_iterator i = vv.begin(); i != vv.end(); i++) { vector<int> v = *i; for (vector<int>::const_iterator j = v.begin(); j != v.end(); j++) { cout << *j << endl; } } } int main() { vector< vector<int> > vv; vector<int> v1; v1.push_back(1); v1.push_back(2); v1.push_back(3); vector<int> v2; v2.push_back(11); v2.push_back(22); v2.push_back(33); vv.push_back(v1); vv.push_back(v2); f(vv); return 0; }