Having problems with my current program

I'm currently taking a starter-course in programming at college, but its an online class so not much 'help' when you get problems, I've been staring at my code for a long time but can't seem to get this error fixed

Heres my code:

Code:

---

#include <iostream>

using std::cout;
using std::cin;
using std::endl;

int main()
{
    int registrants = 0;
    double totalFee = 0.0;
   
    cout << "Enter number of registrants: ";
    cin >> registrants;
   
    if (registrants <= 0)
   
    cout << "Input Error";
   
    else
    {
        if (registrants >= 1 && registrants <= 5)
       
        totalFee = registrants*100;
       
        cout << "Total fee: " << totalFee << endl;
       
        else                  <--- Error is here!!!
        {
            if (registrants >= 6 && registrants <= 10)
           
            totalFee = registrants*80;
           
            cout << "Total fee: " << totalFee << endl;
           
            else
            {
                totalFee = registrants*60;
               
                cout << "Total fee: " << totalFee << endl;
            } 
        }
    }         
               
                system("pause");
                return 0; 
}

---

I keep getting the 2 same errors "Expected primary-expression before "else" and "Expected ';' before "else" but for every other program I've made for class, it looks just like this and no errors at all. Please help!

You might need some curly braces

Code:

---

  else
    {
        if (registrants >= 1 && registrants <= 5){
       
        totalFee = registrants*100;
       
        cout << "Total fee: " << totalFee << endl;
        }
        else                  <--- Error is here!!!
        {

---

Alas! it worked!, thank you a bunch Dino ^^