C语言 结构体问题！急～！！

来源：百度知道 编辑：UC知道 时间：2024/06/07 09:10:29
这个程序有问题 请问是咋回事儿？而且麻烦结构体部分给一下解释...实在不懂.........

#include <iostream.h> //
#include "stdio.h"
#include "stdlib.h"

int s = 81; //initialize s,t,u
int t = 4;
float u = 1.5;

struct node //define a node
{
float data;
struct node* up;
struct node* down;
};

struct node *Head = NULL;

struct node* getnode(int x,int y) //return this function is the type of node*
{
int up = 0; //count the up times,initialize up and down
int down = 0;
int i,j;

struct node* temp = Head; //define a null index temp
// temp = Head;

down = y;
up = x-y;

for(i=0;i<up;i++)
{
//temp->up = temp;

#include <iostream.h> //
#include "stdio.h"
#include "stdlib.h"

int s = 81; //initialize s,t,u
int t = 4;
float u = 1.5;

struct node //define a node
{
float data;
struct node* up;
struct node* down;
}; //定义了一个node结构，包含三个变量 float型的 data
//指向node结构本身的指针 up 和 down (这个结构用作树的节点 )

struct node *Head = NULL; //树的指针

struct node* getnode(int x,int y) //return this function is the type of node*
{
int up = 0; //count the up times,initialize up and down
int down = 0;
int i,j;

struct node* temp = Head; //define a null index temp
// temp = Head;

down = y;
up = x-y;

for(i=0;i<up;i++)
{
//temp->up = temp;
temp = temp->up;
}
for(j=0;j<down;j++)
{

temp = temp->down;

}

return temp;
}

//build a tre