Help me in solving CPPFALL465 problem

help
,
1

My issue

i didn’t understand what’s the error in this

My code

#include <iostream>
using namespace std;

void printPattern(int N) {
    // Upper half
    for (int i = N; i >= 1; --i) {
        // Left stars
        for (int j = 1; j <= i; ++j) {
            cout << "*";
        }

        // Spaces
        for (int j = 1; j <= 2 * (N - i); ++j) {
            cout << " ";
        }

        // Right stars
        for (int j = 1; j <= i; ++j) {
            cout << "*";
        }

        cout << endl;
    }

    // Lower half
    for (int i = 1; i <= N; ++i) {
        // Left stars
        for (int j = 1; j <= i; ++j) {
            cout << "*";
        }

        // Spaces
        for (int j = 1; j <= 2 * (N - i); ++j) {
            cout << " ";
        }

        // Right stars
        for (int j = 1; j <= i; ++j) {
            cout << "*";
        }

        cout << endl;
    }
}

int main() {
    int N;
    cin >> N;  // Input the size of the pattern
    printPattern(N);  // Call the function to print the pattern
    return 0;
}

Learning course: Learn Programming and Problem Solving using C++
Problem Link: https://www.codechef.com/learn/course/sit-cpp-fall/SITFALL64/problems/CPPFALL465