#include <stdio.h>
int main(void)
{
int a[9][9]={};
int i,j;
for(i=0;i<9;i++){
for(j=0;j<=i;j++){
a[i][j] = 0;
if(j==0 || i==j){
a[i][j] = 1;
}else{
a[i][j] = a[i-1][j-1]+a[i-1][j];
}
printf("%2d ",a[i][j]);
}
printf("\n");
}
return 0;
}
输出结果
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
1 8 28 56 70 56 28 8 1
