#include <list>
#include <iostream>
using namespace std;

int main(void){
   list<int> ahel;
   ahel.push_back(5);              
   ahel.push_back(7);             
   ahel.push_back(3);             
   ahel.push_back(8);             
   list<int>::iterator i;
   for(i=ahel.begin(); i != ahel.end(); ++i){cout << *i << " ";}
   cout << endl;   
   i=ahel.begin();
   i++;
   i++;
   ahel.erase(i);   //eemaldab 3nda elemendi
   for(i=ahel.begin(); i != ahel.end(); ++i){cout << *i << " ";}
   cout << endl;   
    
   int eemaldatav=7;
   i=ahel.begin();
   while(i!=ahel.end() && *i!=eemaldatav){i++;} 
     //otsib sobiva väärtuse, väärtuse puudumisel jõuab lõppu
   if(i!=ahel.end()){ahel.erase(i);}
   
   for(i=ahel.begin(); i != ahel.end(); ++i){cout << *i << " ";}
   cout << endl;   
    //tagurpidi väljatrükk
   list<int>::reverse_iterator t;
   for(t=ahel.rbegin(); t!=ahel.rend(); ++t){cout << *t << " ";}
   cout << endl;
   ahel.clear();  //Kustutatakse kõik
   cout << "Elementide arv: " << ahel.size() << endl;
   return 0;
}

/*
[jaagup@minitorn c]$ ./a.out
5 7 3 8
5 7 8
5 8
8 5
Elementide arv: 0
*/