#define MAX 100typedef struct node {   char info;   struct node *llink,*rlink;}TNODE;char pred[MAX],inod[MAX];TNODE *restore(char *,char *,int);int main(int argc,char **argv){   TNODE *root;   if (argc<3) exit(0);   strcpy(pred,argv[1]);   strcpy(inod,argv[2]);   root=restore(pred,inod,strlen(pred));   postorder(root);   printf("\n\n");   return 1;}TNODE *restore(char *ppos,char *ipos,int n){   TNODE *ptr;   char *rpos;   int k;   if (n<=0) return NULL;   ptr=(TNODE *)malloc(sizeof(TNODE));   ptr->info=*ppos;   for (rpos=ipos;ipos
     
      llink=restore(ppos+1,ipos,k);   ptr->rlink=restore(ppos+1+k,ipos+k+1,n-1-k);   return ptr;}postorder(TNODE *ptr){   if (ptr==NULL) return;   postorder(ptr->llink);   postorder(ptr->rlink);   printf("%c",ptr->info);}