testVect.cpp

Code

#include <iostream>
#include <vector>
using namespace std;

int main(void) {
    vector<int> v;
    int n[] = { 47, 15, 22, 29, 38, 11, 91 };
    int i;

    // adding data to vector
    for (i=0; i<7; i++) {
        cout << "Adding: " << n[i] << '\n';
        v.push_back(n[i]);
    }

    // displaying the vector using a simple loop
    cout << "Vector contains: ";
    for (i=0; i<v.size(); i++) {
        cout << v[i] << " ";
    }
    cout << '\n';

    // deleting the 2nd and 3rd elements
    cout << "Deleting 2nd and 3rd elements...\n";
    v.erase(v.begin()+1,v.begin()+3);

    // displaying the vector using an iterator
    cout << "Vector contains: ";
    vector<int>::iterator iter;
    for(iter = v.begin(); iter!=v.end(); iter++) {
        cout << *iter << " ";
    }
    cout << '\n';

    // using some basic vector functions
    cout << "The size is " << v.size() << '\n';
    cout << "The first element is " << v.front() << '\n';
    cout << "The last element is " << v.back() << '\n';

    // clearing the vector the hard way
    // v.clear() would be a lot easier
    // as long as we're backing through the array,
    //   let's display it in reverse order
    while (!v.empty()) {
        cout << v.back() << " ";
        v.pop_back();
    }
    cout << endl;

    return 0;
}