//Pre-processor directives
#include <vector>
#include <iostream>

using namespace std;

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


// The main method - execution begins here
int main(){
	cout << "Calling simple version" << endl;
	simpleVersion();

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

	// Returning 0 in the main method indicates that
	// everything went okay
	return 0;
}


// Returns the maximum int in the vector
int max(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(){
	vector<int> nums;
	nums.push_back(1);
	nums.push_back(2);
	nums.push_back(3);

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

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

	// In C++, this copies the contents of nums into nums2
	vector<int> nums2 = nums;

	// We then change nums so its max is 15
	nums[0] = 15;

	// Notice the change above doesn't affect nums2! The max for
	// nums2 is still 3
	int val = max(nums2);
	cout << val << endl;
}