/*
 * If we want to refer to a variable or function in the std namespace,
 * we have to use the :: operator. For example,
 * std::vector, std::cout, or std::endl
 *
 */
#include <vector>
#include <iostream>

// COMMENTED THIS LINE OUT!
//using namespace std;

/*
 * Function prototypes
 */
void simpleVersion();
int max(std::vector<int> nums);
void moreInteresting();


/*
 * Main method
 */
int main(){
	std::cout << "Calling simple version" << std::endl;
	simpleVersion();

	std::cout << "Calling more interesting version" << std::endl;
	moreInteresting();

	return 0;
}


/*
 * Miscellaneous Functions
 */
int max(std::vector<int> nums){
  int max = nums[0];
  for( int i = 1; i < nums.size(); i++ ){
    if( nums[i] > max ){
      max = nums[i];
    }
  }

  return max;
}


void simpleVersion(){
  std::vector<int> nums;
  nums.push_back(1);
  nums.push_back(2);
  nums.push_back(3);

  int val = max(nums);
  std::cout << val << std::endl;
}


void moreInteresting(){
  std::vector<int> nums;
  nums.push_back(1);
  nums.push_back(2);
  nums.push_back(3);

  std::vector<int> nums2 = nums;
  nums[0] = 15;

  int val = max(nums2);
  std::cout << val << std::endl;
}