# include < stdio. h>
#define N 10
int main( )
{int i,j,a[N][N];
for (i=0;i<N;i++){a[i][i]=1;
for (i=0;i<N;i++)
｛a[i][i]=1;
a[i][0]=1;
｝
for (i=2;i<N;i++)
for (j=1;j<=i-1;j++)
a[i]Cj]=a[i-1][j- 1]+a[i-1][j];
for (i=0;i<N;i++)
{for (j=0;j<=i;j++)
printf(" %6d" ,a[i][j]);
printf("\n");
｝
printf("\n");
return 0;
｝