/*
   testvector.cpp
   CIS 150
   David Klick
   7/1/08
   
   Demonstration of STL vector class.
*/

#include <iostream>
#include <vector>
#include <cstdlib>
#include <ctime>
using std::cin;
using std::cout;
using std::vector;

void cont();

int main() {
   vector<int> v;  // create a vector
   int i, n;

   // randomize random number generator
   srand(time(NULL));

   // put 10 random numbers (1-100) into vector
   for (i=0; i<10; i++) v.push_back(rand() % 100 + 1);
   
   // display vector values using at() function 
   for (i=0; i<10; i++) cout << v.at(i) << ' ';
   cout << '\n';
   
   // display vector values using [] syntax
   for (i=0; i<10; i++) cout << v[i] << ' ';
   cout << '\n';
   
   // clear vector one element at a time (from end)
   while (!v.empty()) {
      n = v.back();
      v.pop_back();
      cout << "removed " << n << '\n';
   }
   
   cout << "Vector now has size " << v.size() << '\n';
   
   cont();
   return 0;
}

/*
   void cont();
   
   Arguments: none
   
   Returns: nothing
   
   Clears input buffer and pauses waiting for user 
   to press Enter.
*/
void cont() {
   if (cin.rdbuf()->sungetc() != -1 && cin.get() != '\n') cin.ignore(80,'\n');
   cout << "Press enter to continue...";
   cin.get();
}