#include <stdio.h>
 #include <stdlib.h>
 #include <malloc.h>
 #define MAX 100

typedef struct
 {
     int data[MAX];
     int top;
 }seqstack, *pseqstack;
 pseqstack s;
 //s = (pseqstack)malloc(sizeof(seqstack));
 
pseqstack init_seqstack()
 {
     pseqstack s;
     s = (pseqstack)malloc(sizeof(seqstack));
     if(s)
         s ->top = -1;
     return s;
 }
 
int empty_seqstack(pseqstack s)
 {
     if(s ->top == -1)
         return 1;
     else
         return 0;
 }
 
int input_seqstack(pseqstack s,int x)
 {
     if(s ->top ==MAX - 1)
         return 0;//栈满不能入栈
     else
     {
         s ->top ++;
         s ->data[s ->top] = x;
         return 1;
     }
 }
 
int out_seqstack(pseqstack s)
 {
     int x;
     if (empty_seqstack(s)) //栈空不能出栈
         return 0;
     else
     {
         x = s ->data[s ->top];
         s ->top--;
         printf("%d",x);
         return 1;
     }
 }
 
int gettop_seqstack(pseqstack s)
 {
     int x;
     if(empty_seqstack(s))
         return 0;
     else
     {
         x = s->data[s ->top];
         return (1);
     }
 }
 
int change(int x)
 {
     int n;
     pseqstack s;
     s = (pseqstack)malloc(sizeof(seqstack));
     s->top=-1;         //初始化后要设top为-1
   
     while(x != 0)
     {
         n = x % n；
         input_seqstack(s,n);
         x = x / n;
     }
     while(s->top>-1)
     {
         out_seqstack(s);//
     }
     putchar('\n');
     return 1;
 }
 
int main()
 {
     int n;
     pseqstack s;
     s = (pseqstack)malloc(sizeof(seqstack));
     printf("输入要转化的进制整数:\n");
     scanf("%d",&n);
     //printf("选择你要转换成的进制数:\n");
     change(n);
     return 0;
 }
 

     int n;
      pseqstack s;
      s = (pseqstack)malloc(sizeof(seqstack));
      s->top=-1;         //初始化后要设top为-1
     
     while(x != 0)
      {
          n = x % n；
          input_seqstack(s,n);
          x = x / n;
      }
      while(s->top>-1)
      {
          out_seqstack(s);//
      }
      putchar('\n');
      return 1;

n在那儿初始化

那怎么改？能帮忙改下吗？O(∩_∩)O谢谢！！！