pattern-2.cpp

#include<iostream>
using namespace std;

int main(){

    int n;
    cin >> n;

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