c++中的find

// find example#include <iostream>     // std::cout#include <algorithm>    // std::find#include <vector>       // std::vectorint main () {  // using std::find with array and pointer:  int myints[] = { 10, 20, 30, 40 };  int * p;  p = std::find (myints, myints+4, 30);  if (p != myints+4)    std::cout << "Element found in myints: " << *p << '\n';  else    std::cout << "Element not found in myints\n";  // using std::find with vector and iterator:  std::vector<int> myvector (myints,myints+4);  std::vector<int>::iterator it;  it = find (myvector.begin(), myvector.end(), 30);  if (it != myvector.end())    std::cout << "Element found in myvector: " << *it << '\n';  else    std::cout << "Element not found in myvector\n";  return 0;}

需要#include <algorithm>
it = find (myvector.begin(), myvector.end(), 30);

Reference:
find -C++ Reference