#include<iostream.h>
#include<conio.h>

int *charger(int *x , int *y)
{
     for(int i=1;i<100;i++)
     {
                y[i]=x[i-1]+x[i];
     }
     return y;
}

int main()
{
     cout<<"Welcome to Khayyam-Pascal Triangle Program.\nThis program helps you to calculate Khayyam-Pascal Triangle."<<endl;
     int rows=0;
     int *a=new int[100];
     int *b=new int[100];
     for(int i=0;i<100;i++)
     {
                a[i]=0;
                b[i]=0;
     }
     char answer='u';
     error:
     cout<<"Enter number of rows(max 34)"<<endl;
     cin>>rows;
     if(rows>34)
     {
                    cout<<"Error report:   You have Entered a number bigger than 34."<<endl;
                    cout<<"                This may make mistakes in program."<<endl;
                    cout<<"                Would you like to enter another number?(y,n)"<<endl;
                    cout<<"                ";
                    cin>>answer;
                    if(answer=='y')
                    {
                                    goto error;
                    }

     }
     a[1]=1;
     cout<<"------------------Khayyam Pascal Triangle-------------------"<<endl;
     while(rows>0)
     {
                      for(int i=1;i<100;i++)
                      {
                                 if(a[i]!=0)
                                                cout<<a[i]<<" ";
                                 else
                                                break;
                      }
                      b=charger(a,b);
                      cout<<endl;
                      rows--;
                      if(rows>0)
                      {
                                    for(int i=1;i<100;i++)
                                    {
                                              if(b[i]!=0)
                                                             cout<<b[i]<<" ";
                                              else
                                                             break;
                                    }
                                    cout<<endl;
                                    rows--;
                                    a=charger(b,a);
                      }
     }


     getch();
     return 0;
}


//end