c语言实现二叉树不递归前序遍历的代码，请使用链栈

好的，请看下面的代码：

typedef struct BiTNode {
    char data;
    struct BiTNode *lchild, *rchild;
} BiTNode, *BiTree;

typedef struct LinkStack {
    BiTree data;
    struct LinkStack *next;
} LinkStack, *LiStack;

void PreOrderTraversal(BiTree T) {
    LiStack S = NULL;
    BiTree p = T;
    while (p || S) {
        if (p) {
            printf("%c", p->data);
            if (p->rchild) {
                S = Push(S, p->rchild);
            }
            p = p->lchild;
        } else {
            p = Pop(S);
        }
    }
}

LiStack Push(LiStack top, BiTree T) {
    LiStack s = (LiStack)malloc(sizeof(LinkStack));
    s->data = T;
    s->next = top;
    top = s;
    return top;
}

BiTree Pop(LiStack top) {
    if (top) {
        BiTree T = top->data;
        top = top->next;
        return T;
    }
    return NULL;
}

希望能够帮到您！接下来，请问需不需要帮您解答其他问题？