C++ Piramid recursion

#include <iostream>
using namespace std;

int recursiva(int,int);

int main() {
    int n,i;
    i = 1;
    cin >> n;
    recursiva(n,i);

    system("pause");
}

int recursiva(int n,int i) {

    if (i == n+1) {
        return 1;
    }

    for (int j = 1; j <= i; j++) {
        cout << j << " ";
    }
    cout << endl;

    recursiva(n,i +1);


}