Part1 answers for question by Pallab Facebook

 // Question  posed  by Pallab Nandi Facebook Part 1 of 4

 // In this  code ,In the first code if (xml && tag) why I can't use the Cout<<*xm<<endl;?

/* Corrected code   far better arranged and  far more explanatory
    Your header  file  as below QCout.h
*/

#ifndef QCOUT_H
#define QCOUT_H

#include <iostream>
#include <fstream>
#include <vector>
#include <string>

// QCout class for XML output management
class QCout {
private:
    std::vector<std::string> xml_tag_stack;   // Stack to hold open XML tags
    std::ostream* xml;                        // Output stream for XML writing

public:
    QCout();                                  // Constructor
    ~QCout();                                 // Destructor (ensures tags are closed)

    void xml_set_stream(std::ostream* s);     // Set output stream for XML file
    void xml_begin(const char* tag);          // Begin an XML tag
    void xml_end(const char* tag);            // End an XML tag
    void xml_endall();                        // Close all open XML tags
    void xml_write(const std::string& content); // Write content within current tag

private:
    void xml_end_(const char* tag, const char* srcfile, int line); // Helper to end tag with error handling
};

#endif