C++ :

#include<iomanip>
#include<iostream>
using namespace std;
int main()
{
	int a[20][21];
	a[1][1]=1;
	for (int i=2; i<=10; ++i)	{
		a[i][1]=1;  a[i][i]=1;	
		for (int j=2; j<=i-1; ++j)
			a[i][j]=a[i-1][j]+a[i-1][j-1]; 
	}
	for (int i=1; i<11; i++)
	{
		if (i!=10) cout<<setw(30-3*i)<<" ";
		for (int j=1; j<=i; j++) cout<<setw(6)<<a[i][j];
			cout<<endl;        
	}
	return 0;
}