#include<stdio.h>
#include<vector>
using namespace std;
int main()
{
    int i=15;
    vector <int> ve;
 
    ve.push_back(40);        // it store at 0 index
    ve.push_back(60);        // it store at 1 index
    ve.push_back(i);        // it store at 2 index
 
    for( i=0; i< ve.size() ; i++ )    //  We use size,  It return Num of element in Vector
            printf(" %d another way using at %d\n", ve[i] , ve.at(i) );
 
 
    // To assing value in a variable    use pop
    i= ve[ 2 ];
    ve.pop_back();            //  it delete  last value
 
    printf(" i is %d %d\n",i, ve.size());
    ve.clear();            //  Now ve is empty
return 0;
}