这里是二叉树的删除：
#include <bits/stdc++.h>
using namespace std;
typedef struct TNode *BinTree;
struct TNode
{
    int Data;
    BinTree Left;
    BinTree Right;
};
BinTree NewNode(int num);
BinTree Insert(BinTree BST, int num);
BinTree FindRMin(BinTree BST);
BinTree CreateTree(int N);
BinTree DeleteTree(BinTree BST, int num);
void FuncPrint(BinTree BST);
int main()
{
    BinTree TreeHead;
    int N, num;
    cin >> N;
    TreeHead = CreateTree(N);
    cin >> num;
    if (TreeHead=DeleteTree(TreeHead, num))
    {
        cout << "删除成功" << endl;
        FuncPrint(TreeHead);
    }
    return 0;
}
BinTree CreateTree(int N)
{
    int num;
    BinTree Head;
    cin >> num;
    Head = NewNode(num);
    for (int i = 1; i < N; i++)
    {
        cin >> num;
        Insert(Head, num);
    }
    return Head;
}
BinTree DeleteTree(BinTree BST, int num)
{
    if (!BST)
    {
        cout << "删除失败" << endl;
    }
    else
    {
        if (num < BST->Data)
        {
            BST->Left = DeleteTree(BST->Left, num);
        }
        else if (num > BST->Data)
        {
            BST->Right = DeleteTree(BST->Right, num);
        }
        else
        {
            if (BST->Left && BST->Right)
            {
                BinTree tempNode = FindRMin(BST->Right);
                BST->Data = tempNode->Data;
                BST->Right = DeleteTree(BST->Right, tempNode->Data);
            }
            else
            {
                BinTree temp = BST;
                if (!BST->Left)
                {
                    BST = BST->Right;
                }
                else
                {
                    BST = BST->Left;
                }
                free(temp);
            }
        }
    }
    return BST; //保持单一出口；在代码64--72，这个return很好地处理了，被删除节点留下的子节点与其父节点的链接；
}
BinTree NewNode(int num)
{
    BinTree Node = (BinTree)malloc(sizeof(struct TNode));
    Node->Data = num;
    Node->Left = Node->Right = NULL;
    return Node;
}
BinTree Insert(BinTree BST, int num)
{
    if (!BST)
    {
        BST = NewNode(num);
    }
    else
    {
        if (num < BST->Data)
        {
            BST->Left = Insert(BST->Left, num);
        }
        else if (num > BST->Data)
        {
            BST->Right = Insert(BST->Right, num);
        }
    }
    return BST;
}
BinTree FindRMin(BinTree BST)
{
    if (!BST)
        return NULL;
    else if (!BST->Left)
        return BST;
    else
        return FindRMin(BST->Left);
}
void FuncPrint(BinTree BST)
{
    if (!BST)
        return;
    else
    {
        cout<<BST->Data<<" ";
        FuncPrint(BST->Left);
        FuncPrint(BST->Right);
    }
}

这里是堆（最大堆）的操作：
#include <bits/stdc++.h>
using namespace std;
#define MAXDATA 1000
#define MAXCAPACITY 1000
#define ERROR -1 //定义一个不可能出现的数；
typedef struct HNode *Heap;
struct HNode
{
    int *Data;
    int size;
    int capacity;
};
typedef Heap MaxHeap;
MaxHeap CreateHeap(int N);
bool IsFull(MaxHeap H);
bool Insert(MaxHeap H, int num);
bool Isempty(MaxHeap H);
int Delete(MaxHeap H);
void BuildHeap(MaxHeap H);
void PercDown(MaxHeap H, int p);
void FuncPrint(MaxHeap H);
int main()
{
    int N, num;
    cin>>N; 
    MaxHeap Hhead = CreateHeap(N);
    BuildHeap(Hhead);
    cin >> num;
    if (Insert(Hhead, num))
    {
        cout << "插入成功" << endl;
        FuncPrint(Hhead);
    }
    else
    {
        cout << "插入失败" << endl;
    }
    int MAXnum;
    if (MAXnum = Delete(Hhead))
    {
        cout << "删除最大数成功,最大数是" << MAXnum << endl;
    }
    else
    {
        cout << "删除失败" << endl;
    }
    return 0;
}
MaxHeap CreateHeap(int N)
{
    MaxHeap H = (MaxHeap)malloc(sizeof(struct HNode));
    H->Data = (int *)malloc((N + 1) * sizeof(int));
    H->size = 0;
    H->capacity = MAXCAPACITY;
    H->Data[0] = MAXDATA;
    for (H->size = 1; H->size <= N; (H->size)++)
    {
        cin >> H->Data[H->size];
    }
    H->size--;
    return H;
}
bool IsFull(MaxHeap H)
{
    /* if ((H->size)==(H->capacity))
    {
        return true;
    }
    else
    {
        return false;
    } */
    //可以直接写成：
    return (H->size == H->capacity);
}
bool Insert(MaxHeap H, int num)
{
    if (IsFull(H))
    {
        return false;
    }
    else
    {
        int i;
        for (i = ++H->size; /*i/2>0 &&*/ num > H->Data[i / 2]; i /= 2) // i/2>0 &&这句话其实可以不加，因为有哨兵
        {
            H->Data[i] = H->Data[i / 2];
        }
        H->Data[i] = num;
        return true;
    }
}
bool Isempty(MaxHeap H)
{
    return (H->size == 0);
}
int Delete(MaxHeap H)
{
    int MAXnum,temp,father,child;
    if (Isempty)
    {
        return ERROR;
    }
    else
    {
        MAXnum = H->Data[1], temp = H->Data[H->size--], father, child;
        for (father = 1; father * 2 <= H->size; father = child)
        {
            child = father * 2;
            if (child != H->size && H->Data[child] < H->Data[child + 1])
                child++;
            if (temp >= H->Data[child])
                break;
            else
                H->Data[father] = H->Data[child];
        }
        H->Data[father] = temp;
    }
    return MAXnum;
}
void BuildHeap(MaxHeap H)
{
    for (int i = H->size / 2; i > 0; i--)
    {
        PercDown(H, i);
    }
}
void PercDown(MaxHeap H, int p)
{
    int father, child;
    int temp=H->Data[p];//这一步还是很有必要的，详见p149图，如果没有这一步会乱套；
    for (father = p; father * 2 <= H->size; father = child)
    {
        child = father * 2;
        if (child != H->size && H->Data[child] < H->Data[child + 1])
            child++;
        if (H->Data[father] >= H->Data[child])
            break;
        else
            H->Data[father] = H->Data[child];
    }
    H->Data[father]=temp;
}
void FuncPrint(MaxHeap H)
{
    for (int i = 1; i <= H->size; i++)
    {
        cout << H->Data[i] << " ";
    }
}