#include <stdio.h>  #define N 12  long combi(int n, int r)  {    int i;    long p = 1;    for (i = 1; i <= r; i++)      p = p *(n - i + 1) / i;    return p;  }     void paint()  {    int n, r, t;    for (n = 0; n <= N; n++)    {      for (r = 0; r <= n; r++)      {        int i; /* 排版设定开始*/        if (r == 0)        {          for (i = 0; i <= (N - n); i++)            printf(" ");        }        else        {          printf(" ");        } /* 排版设定结束*/        printf("%3d", combi(n, r));      }      printf("\n");    }  }