iterator-example

#include <iostream>
#include <vector>
#include <iomanip>
using namespace std;
 
int main() {
    int a = 1;
    vector<int> vec(50,0);
 
    for(vector<int>::iterator it = vec.begin(); it != vec.end(); ++it) {
        *it = a++;
    }
 
    int arr[5][10];
    vector<int>::iterator it = vec.begin();
    for(int i = 0; i < 5; ++i) {
        for(int j = 0; j < 10; ++j) {
            arr[i][j] = *it;
            ++it;
            cout << setw(4) << arr[i][j];
        }
        cout << '\n';
    }
    cout << endl;
}