这是一个回文的程序，自己编的，可出现了好多问题， 我想让高手指点哈！

#include<stdio.h>
#define num 20
typedef struct
{
  char elem[num];
  int top,r,p;
}seqstack;

int main()
{ int i,j,m,n;
  seqstack s;
  char c;
  s->top=-1;
  printf("Please input the num of the First sequence:");
  scanf("%d",&n);
  for(i=1;i<=n;i++)
  {printf("Please input the characer:");
   c=getchar();
   if(c='&') continue;
   s->top++;
   s->elem[s->top]=c;
   p=s->top;
  }
  s->top=s->top++;
  s->elem[s->top++]='&';
  r=s->top++;
  printf(" input the number of the Second characters:");
  scanf("%d",&m);
  if (m!=n) return(ERROR);
  for(j=1;j<=m;j++)
  {printf(" input the character:");
   c=gecher；
   if(c='&')  continue;
   s->top++;
   s->elem[s->top]=c;
  }
    match(p,r);
    return(match);
}
 int match(int *p,int *r)
 {while(s-p!=0)
  if(s->elem[s->p]==s->elem[s->r])
  {s->p--;
   s->r++;
   return (TRUE);
  }
  else
      return(FALSE);

 }