pattern1.cpp

#include <iostream>
using namespace std;
int main() {
    int n;
    cout<< "Enter the value of n: ";
    cin>> n;

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

    return 0;
}