带指针的错误C ++结构 [英] Error C++ struct with pointer

问题描述

帮助pliss ,,

i有问题，

我负责用指针制作项目结构;

like这个，

结构无论{

int next;

int previous;

int value = 5;

};

所以如果用户输入：

1 1

显示5，

如果用户输入：

2 1 3，

2 3 7，

value = 3,5,7

如果用户输入：

3 2;

value = 3,7;

5是擦除..



但是这个程序只是使用指针和结构，帮助请



我尝试了什么：



i尝试创建这个程序2天但没有结果：（

help pliss,,
i have a problem,,
I'm in charge of making a project struct with pointer;
like this,,
struct whatever{
int next;
int previous;
int value = 5;
};
so if the user input:
1 1
display 5,
if user input :
2 1 3,
2 3 7,
value = 3,5,7
if user input :
3 2;
value = 3,7;
5 is erase..

but this program just use pointer and struct, help pls

What I have tried:

i try to creat this program 2 day but no result:(

推荐答案

这个link[ ^ ]会帮助你。

那些不是指针。

对于可用作节点的结构，请尝试以下方法：

Those aren't pointers.
For a struct that you can use as a node, try this:

#include <stdio.h>
#include <stdlib.h>

struct whatever{
struct whatever *next;
struct whatever *previous;
int value;
};
int main()
{
    struct whatever * node1 = (struct whatever*)malloc(sizeof(struct whatever));
    node1->value = 100;
    struct whatever * node2 = (struct whatever*)malloc(sizeof(struct whatever));
    node2->value = 200;
    node1->next = node2;
    node2->previous = node1;
...
    //release the memory
    free(node1);
    free(node2);

    return 0;
}

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