#include <stdio.h>int main(){int n;int i,j;printf("输入金字塔层数:");      scanf("%d",&n);for(i=1;i<=n;i++){for(j=0;j<n-i;j++)printf("  ");for(j=1;j<=i;j++)printf(" %d", j);for(j=i-1;j>=1;--j)printf(" %d", j);printf("\n");}return 0;}