Various Patterns in C++ using Nested Loops

#include<iostream>

#include<iomanip>

using namespace std;

void Pattern1(int n)

{

int i, j, k, x=1; 

for(i=1;i<=n;i++)

{

for(j=1;j<=n-i;j++)

{

cout<<"   ";

}

for(k=1;k<=i;k++)

{

cout<<setw(3)<<x++;

}

cout<<endl;

}

}

int main()

{

int n;

cout<<"Enter N: ";

cin>>n;

Pattern1(n);

}