Insert in Vector Array and Use size function in C++.

#include <iostream>

#include<vector> ///Header file for vector

using namespace std ;

int main()

{

    vector<int>array; ///declare int vector type array

    ///insert or push value

    array.push_back(1);

    array.push_back(2);

    array.push_back(3);

    cout<<"Array Size: "<<array.size()<<endl; ///call the size function and print it

    ///print

    cout<<"Your Array: ";

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

    {

        cout<<array[i]<<" ";

    }

    cout<<endl;

    return 0;

}