WAP to print Pascals Triangle

#include<iostream>
#include<math.h>
using namespace std;

int main()
{
    int i,j,k,l,n,m;
    cout<<"Enter the number of rows :""\n";
    cin>>n;
   
    for(i=0;i<n;i++)
    {
                    cout<<"\n";
                    for(k=(n-i);k>0;k--)
                    { cout<<" ";}
                    if(i==0)
                    {
                            cout<<"*";
                            continue;}
                    if(i==(n-1))
                    {
                            for(j=0;j<((2*n)-1);j++)
                            { cout<<"*";}
                           
                    break;
                    }
                    cout<<"*";
                   
                    for(l=fabs(2*i-1);l>0;l--)
                    {
                                              cout<<" ";
                                              }
                    cout<<"*";
                    }
                   
                    cout<<"\n";
    system ("pause");
    return 0;
}
                   
 

WAP to print Pascals Triangle