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Hi, I encountered some problems in creating a tree and using preorder algorithm to travel it.




// Create a binary search tree

#include<iostream>
struct TreeNode;
typedef struct TreeNode...

Hi, I encountered some problems in creating a tree and using preorder algorithm to travel it.



// Create a binary search tree

#include<iostream>
struct TreeNode;
typedef struct TreeNode...

got it！
thx very much:)

a simple example destructor,i really donot understand the output


#include<iostream>
using namespace std;

class T {
public:
T( double d ) : pd( new double( d ) ) { };
~T();

thanks all:)

Hi, I have a question here



#include<iostream>
using namespace std;

class Counted{
public:
Counted():id(count++){ cout << id << endl; }

hi,i am just a novice to cpp programming.
here is a simple program to store 25 floating-numbers using a vector and then output all the elements in the vector.
when i excute it , some problem arise...