#include <iostream>
#include <string>

using namespace std;

int number_of_sides;

string find_area(int length, int height) {
  int area;
  string area_message = "The area of your shape is ";
  if(number_of_sides == 3){
    area = length * height / 2;
    area_message += to_string(area);
  }
  else if(number_of_sides == 4){
    area = length * height;
    area_message += to_string(area);
  }
  else{
    area_message = "Cannot determine area.";
  }
  return area_message;
}

int main() {
  int height;
  int length;
  cout << "Give the dimensions of a triangle or parallelogram to find its area.\n";
  cout << "What is the length of your shape? ";
  cin >> length;
  cout << "What is the height of your shape? ";
  cin >> height;
  cout << "How many sides does your shape have? ";
  cin >> number_of_sides; // Use the global variable

  cout << find_area(length, height);
  return 0;
}