// Computer Programming, XB_40011, Fall 2018
// Vrije Universiteit, Amsterdam
//
// (GRADED) Assignment 3.3 "Second smallest"
//
// Submit this assignment to Canvas!
// By doing so you declare to comply to the regulations as stated
// on the page on "Ethical behaviour and fraud" in the course's
// Canvas site.
//
// Student name   : Nicola Vermeulen
// Student number : 2635010
// VUnet-id       : nvn960
//
// Fill in your details above,
// then enter your code below this header.
//


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

int main() {
  vector<int> numbers(1);
  int item;
  int smallest;
  int secondSmallest;

  cout << "Enter the numbers in random order: (close by entering q)";
  while (cin >> item) {
    numbers.push_back(item);
  }

  smallest = numbers.at(0);
  secondSmallest = INT_MAX;

  for (int i=0; i < numbers.size(); i++) {

    if (numbers.at(i) < smallest) {
      secondSmallest = smallest;
      smallest = numbers.at(i);
    } else if (numbers.at(i) < secondSmallest) {
      secondSmallest = numbers.at(i);
    }
  }


  try {
    if (secondSmallest == INT_MAX || secondSmallest == smallest) {
      throw runtime_error("error: no second smallest");
    }
    cout << "The second smallest number is " << secondSmallest;
  } catch (runtime_error& excpt) {
    cout << excpt.what();
  }

  return 0;
}