#include <iostream.h> #include <stl.h> int main () { vector<int> i; i.push_back (1); i.push_back (4); i.push_back (2); i.push_back (8); i.push_back (2); i.push_back (2); int n = 0; // Must be initialized, as count increments n. count (i.begin (), i.end (), 2, n); cout << "Count of 2s = " << n << endl; return 0; }