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老是PE,烦请大家看一下我的输出部分void main()
{ .......
.......
printf("(");
show_ans(Root);
printf(")");
}
void show_ans(pnode p)
{
pnode q;
if (p==NULL) return;
if (p->left!=NULL) printf("(");
show_ans(p->left);
if (p->left!=NULL) printf(")");
printf("%s",p->list);
q=p->right;
free(p);
if (q!=NULL) printf("(");
show_ans(q);
if (q!=NULL) printf(")");
}
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