程序代码：

#include <stdio.h>
int main (void)
{
    int n,i,j;
    char a[30][30],b[30][30],c[30][30];
    void dayin(int n,char *pa,char *pb,char *pc);
    scanf("%d",&n);
    i=0;
    while(i<n+1){                                 /*这里的循环是在初步的赋值，想打印3根柱子跟几个盘子。*/                     

        a[i][n]='|';
        for (j=0;j<n-i;j++)
            a[i][2*n-j]=a[i][j]=' ';
        for (j=n-i;j<n;j++)
            a[i][2*n-j]=a[i][j]='-';
        for(j=0;j<2*n+1;j++){
            if(j==n)
                b[i][j]=c[i][j]='|';
            else  b[i][j]=c[i][j]=' ';
        }
        i++;
        dayin(n,a,b,c);                      /*就是这里不知道哪里错了,看不懂编译器的提示*/
    }
void dayin(int n,char *pa,char *pb,char *pc)   /*打印的函数*/
{
    int i,j;
    for(i=0;i<=n;i++){
        for(j=0;j<=2*n;j++)
            printf("%c",pa[i][j]);
        printf("\t\t");
        for(j=0;j<=2*n;j++)
            printf("%c",pb[i][j]);
        printf("\t\t");
        for(j=0;j<=2*n;j++)
            printf("%c",pc[i][j]);
        printf("\n");
    }
}