C:将文本文件复制到链接列表中会导致异常:抛出异常:读取访问冲突。当前为 0x2C2DE900

Question

编辑:针对出现的新问题更新了问题:|

现在，解决了最后一个问题后，我又遇到了另一个问题。复制头部后的帧。函数“addFrame”抛出标题中所示的异常:(

这是我复制的文本文件

T1
C:\opencv\GIF Project\Photos\Tank_1.jpg
1000
T2
C:\opencv\GIF Project\Photos\Tank_2.jpg
1000
T3
C:\opencv\GIF Project\Photos\Tank_3.jpg
1000

复制功能:

/*
    loadGIF: This function loads the GIF from the text file
    Input: char filePath[STRING_SIZE = 50]: The path to the text file
    frameNode* head: The head of the linked list which we load the GIF into
    Output: None
*/
void loadGIF(char filePath[], frameNode** head)
{
    frameNode* temp = NULL;
    FILE* file = fopen(filePath, "r");
    char name[STRING_MAX] = { 0 }, path[STRING_MAX] = { 0 }, line[STRING_MAX] = { 0 };
    int counter = 0, sleep = 0, i = 0;
    while (fgets(line, sizeof(line), file))
    {
        if (counter == THREE)
        {
            counter = 0;
        }
        if (counter == 0)
        {
            strcpy(name, line);
            name[strcspn(name, "\n")] = 0;
        }
        if (counter == ONE)
        {
            strcpy(path, line);
            path[strcspn(path, "\n")] = 0;
        }
        if (counter == TWO)
        {
            sleep = line;
            atoi(sleep);
            if (i == 0)
            {
                *head = createFrame(name, path, sleep);
            }
            else
            {
                temp = createFrame(name, path, sleep);
                addFrame(&head, temp);
            }
            i++;
        }
        //memset(name, 0, sizeof(name));
        //memset(path, 0, sizeof(path));
        counter++;
    }
    fclose(file);
}

我在其中调用函数的主部分:

int main(void)
{
    int i = 0, choise = -1, newGif = -1, sleep = 0, place = 0;
    char path[STRING_MAX] = { 0 }, name[STRING_MAX] = { 0 };
    frameNode* head = NULL, *temp = NULL;
    newGif = loadingFunction();
    if (newGif == 1)
    {
        printf("Enter The Path To The Text File Which Holds The GIF's Data: \n");
        fgets(path, STRING_MAX, stdin);
        path[strcspn(path, "\n")] = 0;
        loadGIF(path, &head);
    }
// The rest doesn't matter
}

这是addFrame函数:

/*
    addFrame: This function addes a new frame to the GIF
    Input: frameNode* head: The head of the linked list ( The first frame of the GIF )
           newFrame*: The new frame to be added
    Output: None
*/
void addFrame(frameNode* head, frameNode* newFrame)
{
    frameNode* current = head;
    while (current->next != NULL) // <-- Exception thrown here
    {
        current = current->next;
    }
    current->next = newFrame;
    newFrame->next = NULL;
}

我认为问题出在链接列表的创建中，但我无法指出它。

如果你们需要的话，我会添加任何其他内容。我知道以前曾有人问过类似的问题，我检查了它们，这似乎对我的事业没有帮助。

非常感谢!

Answer 1

这是因为counter不断增加，永远无法满足您的条件。

Read my comments inline.

if (counter == 0)
{
    strcpy(name, line);
    name[strcspn(name, "\n")] = 0;
   counter++; //increment the counter **kiran**
}
if (counter == 1)
{
    strcpy(path, line);
    path[strcspn(path, "\n")] = 0;
   counter++; //increment the counter **kiran**
}
if (counter == 2)
{
    atoi(line);
    sleep = line;
    if (i == 0)
    {
        *head = createFrame(name, path, sleep);
    }
    else
    {
        temp = createFrame(name, path, sleep);
        addFrame(&head, temp);
    }
    counter = 0; //reset the counter
    i++;
}
    //memset(name, 0, sizeof(name));
    //memset(path, 0, sizeof(path));
   // counter++;   //remove this line    **kiran**

<小时/>

更新以处理第二个问题。

  addFrame(&head, temp);

应该是

addFrame(*head, temp);

到目前为止，您正在传递 frameNode *** 但它应该是 frameNode *。