STL05

// STL05.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <vector>
#include <functional>
#include <algorithm>
#include <iostream>
#include <fstream>
#include <iostream>
#include <iomanip>


using namespace std;

bool twice ( int elem1, int elem2 )
{
   return elem1 * 2 == elem2;
}

bool less10 ( int elem1 )
{
   return elem1 <10;
}

void show(int x) { cout << setw(8) <<  x  << endl; };
//void show(int x) { cout << setw(8) <<  x  << endl; };

int _tmain(int argc, _TCHAR* argv[])
{
    vector<int> a;
    vector<int>::iterator result1;
    ifstream ifs("file_a.txt");

    int x;
    while (ifs>> x)
    {
        a.push_back (x);
    }

    //adjacent_find
    result1 = adjacent_find( a.begin( ), a.end( ) );
    if ( result1 == a.end( ) )
        cout << "There are not two adjacent elements that are equal."
           << endl;
    else
      cout << "There are two adjacent elements that are equal."
           << "\n They have a value of "
           <<  *( result1 ) << "." << endl;

    //count
    cout <<  "Elements =10 -->" << count(a.begin(), a.end(), 10) << endl;
    //count_if
    cout <<  "Elements <10 -->" << count_if(a.begin(), a.end(), bind2nd (less <int>(), 10)) << endl;
    cout <<  "Elements <10 -->" << count_if(a.begin(), a.end(), less10) << endl;

    //equal 1
    vector <int> b(a);
    if (equal(a.begin(),a.end(),b.begin ()))
        cout << "a==b" << endl;
    else
        cout << "a!=b" << endl;

    //equal 2
    vector <int> c,d;
    c.push_back (1);
    c.push_back (2);
    c.push_back (3);

    d.push_back (2);
    d.push_back (4);
    d.push_back (6);

    if (equal(c.begin(),c.end(),d.begin (),twice))
        cout << "c==d" << endl;
    else
        cout << "c!=d" << endl;

    //find
    result1 = find(a.begin(),a.end(),37) ;
    if (result1==a.end()) cout << "Not found" << endl;
    else
        cout << *(result1) << endl;


        //find
    result1 = find_if(a.begin(),a.end(),less10);
    if (result1==a.end()) cout << "Not found" << endl;
    else
        cout << *(result1) << endl;

    //for_each(a.begin(),a.end (), show);
    return 0;
}