The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference
by Nicolai M. Josuttis, Addison-Wesley, 1999
© Copyright Nicolai M. Josuttis 1999
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <iterator>
using namespace std;
int main()
{
// create empty vector for strings
vector<string> sentence;
// reserve memory for five elements to avoid reallocation
sentence.reserve(5);
// append some elements
sentence.push_back("Hello,");
sentence.push_back("how");
sentence.push_back("are");
sentence.push_back("you");
sentence.push_back("?");
// print elements separated with spaces
copy (sentence.begin(), sentence.end(),
ostream_iterator<string>(cout," "));
cout << endl;
// print ``technical data''
cout << " max_size(): " << sentence.max_size() << endl;
cout << " size(): " << sentence.size() << endl;
cout << " capacity(): " << sentence.capacity() << endl;
// swap second and fourth element
swap (sentence[1], sentence[3]);
// insert element "always" before element "?"
sentence.insert (find(sentence.begin(),sentence.end(),"?"),
"always");
// assign "!" to the last element
sentence.back() = "!";
// print elements separated with spaces
copy (sentence.begin(), sentence.end(),
ostream_iterator<string>(cout," "));
cout << endl;
// print ``technical data'' again
cout << " max_size(): " << sentence.max_size() << endl;
cout << " size(): " << sentence.size() << endl;
cout << " capacity(): " << sentence.capacity() << endl;
}