1.包含tinyxml.lib 及头文件
2.code

void CreateXmlFile()
{
    TiXmlDocument *xdoc = new TiXmlDocument();  //创建一个XML的文档对象。
    TiXmlDeclaration* xdec = new TiXmlDeclaration("1.0", "gbk", "");    //创建XMl文件头
    xdoc->LinkEndChild(xdec); //将文件头连接到文档对象

    TiXmlElement *Ele1 = new TiXmlElement("business");  //创建business对象
    xdoc->LinkEndChild(Ele1);                           //将business对象连接到文档对象
    Ele1->SetAttribute("id", "FPKJ");                   //设置business对象的属性
    Ele1->SetAttribute("comment", "工具");

    TiXmlElement *Ele2 = new TiXmlElement("REQUEST_COMMON_FPKJ"); //创建REQUEST_COMMON_FPKJ对象
    Ele1->LinkEndChild(Ele2);   //将REQUEST_COMMON_FPKJ子对象连接到business对象
    Ele2->SetAttribute("class", "REQUEST_COMMON_FPKJ");

    TiXmlElement *Ele3 = new TiXmlElement("COMMON_FPKJ_FPT");
    Ele2->LinkEndChild(Ele3);
    Ele3->SetAttribute("class", "COMMON_FPKJ_FPT");

    TiXmlElement* FPQQLSH = new TiXmlElement("FPQQLSH");
    TiXmlText* FPQQLSH_text = new TiXmlText("123"); //设置值
    FPQQLSH->LinkEndChild(FPQQLSH_text);
    Ele3->LinkEndChild(FPQQLSH);

    TiXmlElement* KPLX = new TiXmlElement("KPLX");
    TiXmlText* KPLX_text = new TiXmlText("234");
    KPLX->LinkEndChild(KPLX_text);
    Ele3->LinkEndChild(KPLX);


    TiXmlElement *Ele4 = new TiXmlElement("COMMON_FPKJ_XMXXS");
    Ele2->LinkEndChild(Ele4);
    Ele4->SetAttribute("class", "COMMON_FPKJ_XMXX");
    Ele4->SetAttribute("size", 2);

    for (int i = 0; i < 2; i++)
    {
        TiXmlElement *Ele5 = new TiXmlElement("COMMON_FPKJ_XMXX");
        Ele4->LinkEndChild(Ele5);

        TiXmlElement* FPHXZ = new TiXmlElement("FPHXZ");
        TiXmlText* FPHXZ_text = new TiXmlText("345");
        FPHXZ->LinkEndChild(FPHXZ_text);
        Ele5->LinkEndChild(FPHXZ);

        TiXmlElement* SPBM = new TiXmlElement("SPBM");
        TiXmlText* SPBM_text = new TiXmlText("456");
        SPBM->LinkEndChild(SPBM_text);
        Ele5->LinkEndChild(SPBM);


    }
    xdoc->SaveFile("1.xml");//保存到文件
}

3.结果

<?xml version="1.0" encoding="gbk" ?>
<business id="FPKJ" comment="工具">
    <REQUEST_COMMON_FPKJ class="REQUEST_COMMON_FPKJ">
        <COMMON_FPKJ_FPT class="COMMON_FPKJ_FPT">
            <FPQQLSH>123</FPQQLSH>
            <KPLX>234</KPLX>
        </COMMON_FPKJ_FPT>
        <COMMON_FPKJ_XMXXS class="COMMON_FPKJ_XMXX" size="2">
            <COMMON_FPKJ_XMXX>
                <FPHXZ>345</FPHXZ>
                <SPBM>456</SPBM>
            </COMMON_FPKJ_XMXX>
            <COMMON_FPKJ_XMXX>
                <FPHXZ>345</FPHXZ>
                <SPBM>456</SPBM>
            </COMMON_FPKJ_XMXX>
        </COMMON_FPKJ_XMXXS>
    </REQUEST_COMMON_FPKJ>
</business>