string::find - نسخه قابل چاپ

کد:
// string::find

#include <iostream>

#include <string>

using namespace std;



int main ()

{

  string str ("There are two needles in this haystack with needles.");

  string str2 ("needle");

  size_t found;



  // different member versions of find in the same order as above:

  found=str.find(str2);

  if (found!=string::npos)

    cout << "first 'needle' found at: " << int(found) << endl;



  found=str.find("needles are small",found+1,6);

  if (found!=string::npos)

    cout << "second 'needle' found at: " << int(found) << endl;



  found=str.find("haystack");

  if (found!=string::npos)

    cout << "'haystack' also found at: " << int(found) << endl;



  found=str.find('.');

  if (found!=string::npos)

    cout << "Period found at: " << int(found) << endl;



  // let's replace the first needle:

  str.replace(str.find(str2),str2.length(),"preposition");

  cout << str << endl;



  return 0;

}