Help me in solving CPPFALL465 problem

help
,
1

My issue

i need solution i think i am facing with space

My code

#include <iostream>
using namespace std;

void printRhombusCompliment(int N) {
    // Upper part of the rhombus
    for (int i = N; i >= 1; i--) {
        for (int j = 1; j <= i; j++) {
            cout << "*";
        }
        for (int j = 1; j <= 2 * (N - i); j++) {
            cout << " ";
        }
        for (int j = 1; j <= i; j++) {
            cout << "*";
        }
        cout << endl;
    }
    // Lower part of the rhombus
    for (int i = 1; i <= N; i++) {
        for (int j = 1; j <= i; j++) {
            cout << "*";
        }
        for (int j = 1; j <= 2 * (N - i); j++) {
            cout << "";
        }
        for (int j = 1; j <= i; j++) {
            cout << "*";
        }
        cout << endl;
    }
}

int main() {
    int N;
    cin >> N;
    printRhombusCompliment(N);
    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