c 2b 2b std 3a 3acount function

1// count algorithm example
2#include <iostream>     // std::cout
3#include <algorithm>    // std::count
4#include <vector>       // std::vector
5
6int main () {
7  // counting elements in array:
8  int myints[] = {10,20,30,30,20,10,10,20};   // 8 elements
9  int mycount = std::count (myints, myints+8, 10);
10  std::cout << "10 appears " << mycount << " times.\n";
11
12  // counting elements in container:
13  std::vector<int> myvector (myints, myints+8);
14  mycount = std::count (myvector.begin(), myvector.end(), 20);
15  std::cout << "20 appears " << mycount  << " times.\n";
16
17  return 0;
18}