Vectors

A vector is a container similar to an array, but has no fixed size and can dynamically grow by pushing elements to it. A reference to all of its member functions can be found here: http://www.cplusplus.com/reference/vector/vector/

Ex Code

#include <iostream>
#include <vector>
#include <iterator>
#include <string>
using namespace std;
void vector_ex() {

    vector<string> students;
    cout << "\nVECTOR ITERATORS\n";
    students.push_back("Mary");

    students.push_back("Dave");

    students.push_back("Sara");

    students.push_back("Bill");
    cout << "\nWithout iterator\n";

    for (int i = 0; i < students.size(); i++) {

        cout << students[i] << endl;

    }
    cout << "\nWith iterator\n";

    vector<string>::iterator itr;

    for (itr = students.begin(); itr != students.end(); ++itr) {

        cout << *itr << endl;

    }
    cout << endl;

}

int main() {

    vector_ex();

    return 0;

}


Output
Without iterator
Mary
Dave
Sara
Bill
With iterator

Mary

Dave

Sara

Bill