The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference, 2nd Edition
by Nicolai M. Josuttis, Addison Wesley Longman, 2012
Copyright © 2012 by Pearson Education, Inc. and Nicolai M. Josuttis
#include <vector>
#include <iostream>
using namespace std;
int main()
{
vector<int> coll;
// insert elements from -3 to 9
for (int i=-3; i<=9; ++i) {
coll.push_back (i);
}
// print number of elements by processing the distance between beginning and end
// - NOTE: uses operator - for iterators
cout << "number/distance: " << coll.end()-coll.begin() << endl;
// print all elements
// - NOTE: uses operator < instead of operator !=
vector<int>::iterator pos;
for (pos=coll.begin(); pos<coll.end(); ++pos) {
cout << *pos << ' ';
}
cout << endl;
// print all elements
// - NOTE: uses operator [] instead of operator *
for (int i=0; i<coll.size(); ++i) {
cout << coll.begin()[i] << ' ';
}
cout << endl;
// print every second element
// - NOTE: uses operator +=
for (pos = coll.begin(); pos < coll.end()-1; pos += 2) {
cout << *pos << ' ';
}
cout << endl;
}