C++ Primer exercise 3.13

i have solved the problem but it is quite length. as usual, i wanted some
coding-standards or good-design opinions:

/* C++ Primer 4/e
 * chapter 3 - Library Types

 * exercise 3.13
 * STAMEMENT
 * read a set of integers into the vector. calculate and print the
 sum of each * pair of adjacent elements of the vector. If there is an odd
 number then tell the * user about it and print the value of the last
 element without summing it. *
 */

#include <iostream>
#include <vector>

int main()
{
  std::vector<int> ivec; /* empty vector */
  
  int ivec_limit = 11;
  for(int i = 5; i != ivec_limit; ++i) /* inserts itegers */
    ivec.push_back(i);

  /* now we will print the elements of vector */ std::cout << "These are
  the elements of vector:\t"; for(std::vector<int>::const_iterator
  iter=ivec.begin(); iter != ivec.end(); ++iter)
    {
      std::cout << *iter << " ";
    }

  std::cout << std::endl;
  /* actual programme */
  for(std::vector<int>::iterator iter = ivec.begin(); iter != ivec.end();
  ++iter)
    {
    if((*iter % 2) != 0)
        {
          std::cout << "\n"
            << *iter
            << " is an odd number"
            << " not adding it to the total."
            << std::endl;
          if(iter == ivec.begin())
        {
          std::cout << *iter
                << " is the 1st element of vector"
                << std::endl;
        }
          else
        {
          std::cout << "--> last element was: "
                << *(iter - 1)
                << std::endl;
        }
        }
      else
        {
          if((iter + 1) == ivec.end())
        {
          std::cout << "\nLast element of vector is: "
                << *iter
                << std::endl;
        }
          else
        {
          std::cout << "\nAdjacent elements are: "
                << *iter
                << " & "
                << *(iter + 1)
                << "\n--> and their sum is: "
                << *iter + *(iter + 1)
                << std::endl;
        }
        }
    }

  return 0;
}
      
      
===== OUTPUT =============
[arnuld@arch cpp ]% g++ -ansi -pedantic -Wall -Wextra ex_03-13.cpp
[arnuld@arch cpp ]% ./a.out
These are the elements of vector: 5 6 7 8 9 10

5 is an odd number not adding it to the total. 5 is the 1st element of
vector

Adjacent elements are: 6 & 7
--> and their sum is: 13

7 is an odd number not adding it to the total. --> last element was: 6

Adjacent elements are: 8 & 9
--> and their sum is: 17

9 is an odd number not adding it to the total. --> last element was: 8

Last element of vector is: 10
[arnuld@arch cpp ]%

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