Compiling Error VS2010

Hi,

I am the beginner of Visual C++(2010), I got the compiling errors
from this attached code.

Please give me advice.
Thanks,
JT
#include "stdafx.h"
#include <iostream>

using namespace std;

class A
{
public:
	int x,y,z;
	A(int a, int b, int c) { x=a; y=b; z=c;}

}

ostream &operator<<(ostream &stream, A o)
{
	stream << o.x << ",";
	stream << o.y << ",";
	stream << o.z << endl;

}

using namespace System;

int main(array<System::String ^> ^args)
{
    //Console::WriteLine(L"Hello World");
    A a(1,2,3), b(2,3,4), c(5,6,7);
	cout << a << b << c;
    return 0;
}

Open in new window

jtran007Asked:
Who is Participating?

Improve company productivity with a Business Account.Sign Up

x
 
jkrConnect With a Mentor Commented:
Well, that is the managed equivalent to 'main()' - if you don't want this, be sure to create an unmanaged project.
0
 
phoffricCommented:
Could you list the errors with the line numbers?
0
 
phoffricCommented:
I'm not sure what System namespace is. AFIK for your includes, line 4 should be good.
0
Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
jkrCommented:
The C++ part has a few problems nin terms of syntax and declaration of such an operator, the following works fine:
#include <iostream>

using namespace std;

class A;

ostream& operator<<(ostream &stream, A& o);

class A
{
friend ostream& operator<<(ostream &stream, A& o);
public:
	int x,y,z;
	A(int a, int b, int c) { x=a; y=b; z=c;}

};

ostream& operator<<(ostream &stream, A& o)
{
	stream << o.x << ",";
	stream << o.y << ",";
	stream << o.z << endl;

}


int main()
{

    A a(1,2,3), b(2,3,4), c(5,6,7);
	cout << a << b << c;
    return 0;
}

Open in new window

0
 
jkrCommented:
Ooops, sorry, little correction:
#include <iostream>

using namespace std;

class A;

ostream& operator<<(ostream &stream, A& o);

class A
{
friend ostream& operator<<(ostream &stream, A& o);
public:
	int x,y,z;
	A(int a, int b, int c) { x=a; y=b; z=c;}

};

ostream& operator<<(ostream &stream, A& o)
{
	stream << o.x << ",";
	stream << o.y << ",";
	stream << o.z << endl;

   return stream;

}


int main()
{
    A a(1,2,3), b(2,3,4), c(5,6,7);
	cout << a << b << c;
    return 0;
}

Open in new window

0
 
phoffricConnect With a Mentor Commented:
I thought the author just wanted advice in order to learn.
0
 
jtran007Author Commented:
Hi,

Thanks jkr. You are ringt; however, I'd like this code running under VS2010 for c++ since
once I chose the console project, the Visual studio automatically adds "using namespace System"
and int main(array<System::String ^> ^args).
How is this code modified to work in this vs2010 environment but still keeps the same function call?

Thanks again,
JT
0
 
jkrCommented:
You mean the following?
int main(int argc, char** argv)
{
    A a(1,2,3), b(2,3,4), c(5,6,7);
	cout << a << b << c;
    return 0;
}

Open in new window

0
 
jtran007Author Commented:
Hi jkr,

I mean this call which is autmatically added by VS2010 when the console app is chosen:

int main(array<System::String ^> ^args)

Do you have any idea since it is totally different from the one (int main(int argc, char** argv)
that I usually use in VS6.0.

Thanks,'
JT
0
 
jtran007Author Commented:
Thanks,
JT
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.