#include <vector>
#include <iostream>

using namespace std;

void simpleVersion();
void moreInteresting();
void userMax();

int main(){
  //simpleVersion();
  userMax();

  return 0;
}

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);

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

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

void userMax() {
  int nextVal = 0;
  vector<int> nums;
  
  cout << "enter 1st value: ";
  cin >> nextVal;
  nums.push_back(nextVal);
 
  cout << "enter 2nd value: ";
  cin >> nextVal;
  nums.push_back(nextVal);
 
  cout << "enter 3rd value: ";
  cin >> nextVal;
  nums.push_back(nextVal);
  
  cout << max(nums) << endl;
}