PROGRAM TO PRINT A PATTERN

//PROGRAM TO PRINT A PATTERN
/*MADE BY KRISHNA AGARWAL*/
#include<iostream>
using namespace std;
int main()
{

    int n,i,j,k;
    cout<<"enter the no. of lines\n";
    cin>>n;
    i=1;
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=n-i;j++)
            cout<<" ";
        for(k=1;k<=2*i-1;k++)
            cout<<k;
        cout<<endl;
    }
    return 0;
}