namespace with classes and objects in c++ [closed]

#include <iostream>
#include <string>

using namespace std;
namespace string

class string

string a;

public:
string()

string ( const string *q ): a(*q)




string (string &r):a(r.a)




string (const std::string &_a):a(_a)




~demo ()



void show ()
cout << a;


void change (const std::string &_a)
a = _a;

;




using namespace string;
int main ()

demo s1;
demo s2("Hello");
demo s3(s2);
s1.show();
s2.show();
s3.show();
s2.change("Java");
s2.show();
s3.show();



Desired OUTPUT is Hello Hello Java Hello

I want To define a namespace i.e. string. And in there is a header file in c++ i.e.. string both have same name

so how can i code the program to avoid nameclash between these two same names in c++.

This question appears to be off-topic. The users who voted to close gave this specific reason:

string

std

2 Answers
2

Seems like your professor wants you to understand following things,

using namespace std;

Tried to compile your program. Not sure all your intentions are correct in following successfully compiled solution. Check it.

#include <iostream>
#include <string>

// Do not pollute the global namespace with using namespace.
//using namespace std;
namespace string

class string

std::string a; // Assume you need to store a string inside your class.

public:
string() ;

string (const std::string *q ) : a(*q)

string (string &r):a(r.a)

string (const std::string &_a):a(_a)

~string()

void show ()
std::cout << a;


void change (const std::string &_a)
a = _a;

; // ~class end
; //~namespace end


int main ()

// Use full namespace qualified ID everywhere
string::string s1;
string::string s2("Hello");
string::string s3(s2);
s1.show();
s2.show();
s3.show();
s2.change("Java");
s2.show();
s3.show();



Do not use this straightaway. Learn following things.

using namespace std

string

using namespace std

cout

std::cout

string::string

std::string