TinyXML #include 问题...使用库

发布于 2024-10-13 23:55:24 字数 1044 浏览 5 评论 0原文

嘿，我真的想让 TinyXML 至少读取一个文件，但它说“main.cpp：8：错误：'TiXMLDocument'未在此范围内声明”

这是我使用的代码：

TiXMLDocument("demo.xml");

理想情况下我想阅读能够读取文件并输出 XML，所以我也尝试了我在教程中在线找到的这段代码

#include <iostream>

#include "tinyxml.h"
#include "tinystr.h"

void dump_to_stdout(const char* pFilename)
{
    TiXmlDocument doc(pFilename);
    bool loadOkay = doc.LoadFile();
    if (loadOkay)
    {
        printf("\n%s:\n", pFilename);
        dump_to_stdout( &doc ); // defined later in the tutorial
    }
    else
    {
        printf("Failed to load file \"%s\"\n", pFilename);
    }
}

int main(void)
{
    dump_to_stdout("demo.xml");
    return 0;
}

，我现在遇到的错误是：

main.cpp: In function ‘void dump_to_stdout(const char*)’:
main.cpp:13: error: cannot convert ‘TiXmlDocument*’ to ‘const char*’ for argument ‘1’ to ‘void dump_to_stdout(const char*)’

如果它对 Mac 上的我有帮助，我尝试在终端和 textmate 中进行编译。我还尝试在编译 main.cpp 之前单独编译 TinyXML 的 cpp 文件，但我不知道为什么我无法打印出 demo.xml，更不用说读取它了。

原文

Hey, i'm really trying to get TinyXML to at least read a file but it says "main.cpp:8: error: ‘TiXMLDocument’ was not declared in this scope"

This is the code im using:

TiXMLDocument("demo.xml");

Ideally i want to read able to read files and output the XML so i also tried this code i found online in a tutorial

#include <iostream>

#include "tinyxml.h"
#include "tinystr.h"

void dump_to_stdout(const char* pFilename)
{
    TiXmlDocument doc(pFilename);
    bool loadOkay = doc.LoadFile();
    if (loadOkay)
    {
        printf("\n%s:\n", pFilename);
        dump_to_stdout( &doc ); // defined later in the tutorial
    }
    else
    {
        printf("Failed to load file \"%s\"\n", pFilename);
    }
}

int main(void)
{
    dump_to_stdout("demo.xml");
    return 0;
}

And the errors I'm getting now are:

main.cpp: In function ‘void dump_to_stdout(const char*)’:
main.cpp:13: error: cannot convert ‘TiXmlDocument*’ to ‘const char*’ for argument ‘1’ to ‘void dump_to_stdout(const char*)’

If it helps im on a mac, ive tried compiling in terminal as well as textmate. I also tried to compile the cpp files for TinyXML separately before compiling main.cpp and i have no idea why i cant print out demo.xml let alone read it.

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你是暖光i 2024-10-20 23:55:24

dump_to_stdout( &doc ); // defined later in the tutorial

这是你的问题。

dump_to_stdout 采用 const char*，而 TiXmlDocument 绝对不是。
您已经在该函数中，因此假设文件加载，您将拥有无限递归。
稍后定义一个采用 TiXmlDocument 的文件并不重要。此时，唯一存在的 dump_to_stdout 就是您所在的那个，因此会出现错误。在该函数之前向前声明您想要的函数，例如：void dump_to_stdout(TiXmlDocument*);

dump_to_stdout( &doc ); // defined later in the tutorial

Here's your problem.

dump_to_stdout takes a const char* which TiXmlDocument is definitely not.
You're already in that function, so assuming the file loads you'll have infinite recursion.
It doesn't matter that you've got one defined later that takes a TiXmlDocument. At this point, the only dump_to_stdout that exists is the one you're in, hence the error. Forward declare the one you want before this function, e.g: void dump_to_stdout(TiXmlDocument*);

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