2.3

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

void printInt (int number);

int main (){

    vector<int> myVec;
    vector<int>::iterator first, last;
    for (long i=0; i<10; i  ){
        myVec.push_back(i);
    }
    first = myVec.begin();
	last = myVec.begin()   5;
    if (last >= myVec.end()){
        return - 1;
    }
    myVec.erase(first, last);
    for_each (myVec.begin(), myVec.end(), printInt);
	system("pause");
    return 0;
}
void printInt (int number)
{
cout << number << endl;
}
Run on cpp.sh