How do I take my code and use it for eu4?

This is my first time coding with c++ and im trying to make a little 5 question game for my kids. I have it working I just don’t know where to start making a UI so they can see pictures while they play it. Any good starting point will help alot. Here is an example of the code I wrote and am trying to make the UI for.

include using namespace std;

int a; int b; int c; int d;

int main() {

string pick;
pick = “Pick the one you dislike most \n \n”;
string dog;
dog = “You are A Dog!”;
string cat;
cat = “You are A Cat!”;
string fish;
fish = “You are A Fish!”;
string monkey;
monkey = “You are A Monkey!”;
string bird;
bird = “You are A Bird!”;

if(b==2){

 cout << pick;

 cout << "1. Running \n";

 cout << "2. Climbing \n";

 cout << "3. Flying \n";

 cin >> c;

 if(c==1){

     cout << pick;

 cout << "1. Climbing \n";

 cout << "2. Flying \n";

 cin >> d;

     if(d==1){

         cout << bird;

     }

     if(d==2){

         cout << monkey;

     }

Honestly, google “UE4 Getting Started”. no joke, you’ll find everything you need.