#include <iostream>
#include <vector>
 
using namespace std;
 
int main() {
// create a vector to store int
vector<int> vec;
int i;
 
// display the original size of vec
cout << "vector size = " << vec.size() << endl;
 
// push 5 values into the vector
for (i = 0; i < 5; i++) {
    vec.push_back(i);
}
 
// display extended size of vec
cout << "extended vector size = " << vec.size() << endl;
 
// access 5 values from the vector
for (i = 0; i < 5; i++) {
    cout << "value of vec [" << i << "] = " << vec[i] << endl;
}
 
// use iterator to access the values
vector<int>::iterator v = vec.begin();
while (v != vec.end()) {
    cout << "value of v = " << *v << endl;
    v++;
}
 
return 0;
}

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