#include<iostream.h>
#include<conio.h>
void display(int[],int);
int pas(int n)
{
  int f=0;
  while(n>0)
  {
    f=f+n;
    n--;
  }
  return(f-1);
}
void main()
{
  clrscr();
  int n,a[100];int z=0;
  cout<<"enter n";cin>>n;
  for(int i=0;i<4;i++)
  {
    a[i]=1;
  }
  for(int x=3;x<n;x++)
  {
    z=pas(x);a[z]=1;z++;a[z]=1;
  }
  int c=0; c=pas(n); a[c]=1;
  for(int b=3;b<=n;b++)
  {
    int d=0; int e=0,f=0;
    e=pas(b-1)+2;
    f=pas(b-1);
    d=pas(b);
    while(e!=d)
    {
      a[e]=a[f]+a[f-1];
      e++;f--;
    }
  }
  display(a,n);
  getch();
}

void display(int a[],int n)
{
  int j=40,k=10;int s=0;int p=1;
  gotoxy(j,k);
  cout<<a[s];
  for(int t=1;t<n;t++)
  {
    p++; int h=0;j=j-2; k=k+2;
    for(int w=1;w<=p;w++)
    {
      s++;
      gotoxy(j+h,k);
      cout<<a[s];
      h=h+4;
    }
  }
}

#include <iostream>

int factorial ( int n, int k )
{
  int result = 1;

  while ( k-- > 0 )
    result *= n--;

  return result;
}

int pascal_triangle ( int n, int k )
{
  return factorial ( n, k ) / factorial ( k, k );
}

int main()
{
  for ( int i = 0; i < 9; i++ ) {
    for ( int j = 0; j <= i; j++ )
      std::cout<< pascal_triangle ( i, j ) <<' ';
    std::cout<<'\n';
  }
}

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int n, i, j;
    printf("How many rows you want to show?: ");
    scanf("%d", &n);
    for (i=0; i<n; i++) {
        int c = 1;
        for(j=i; j>=0; j--) {
            printf(" %d", c);
            c = c * j/(i-j+1);
        }
        printf("\n");
    }
}