C / C++ / MFC

• Qualify it with the std namespace specifier,
  e.g.
  C++

  #include <iostream>
  int main()
  {
    std::cout << "hi" << std::endl;
  }

• Take advantge of the using namespace std; statement,
  e.g.
  C++

  #include <iostream>
  using namespace std;
  int main()
  {
    cout << "hi" << endl;
  }

Vaclav_Sal wrote:

#include <iostream>
using namespace std;

Quote:

Shouldn't these two statements be in the project's stdafx.h file?

// some .h file
#if defined(SOME_TAG)
// statements to be included if SOME_TAG is defined
#endif

// main .cpp file
#define SOME_TAG // or not as the case may be
#include some .h file

// other code including blocks like ...
#if defined(SOME_TAG)
// statements to be included if SOME_TAG is defined
#endif

namespace std {

class TEST_CLASS_1 {
public:
TEST_CLASS_1();
virtual ~TEST_CLASS_1();

int TestFunction(void);
};

Extending the namespace std - cppreference.com[^]:

It is undefined behavior to add declarations or definitions to namespace std or to any namespace nested within std, with a few exceptions noted below

Vaclav_Sal wrote:

That is the way Eclipse builds the class when asked for "namespace".

#ifndef MY_DEBUG
#define MY_DEBUG
#endif

#define MY_DEBUG

#include <iostream>

#include <math.h> // rint round up math
#include <stdio.h>
#include <stdlib.h>

#include <fcntl.h>
//#include <sys/shm.h>
#include <sys/stat.h>
//#include <sys/mman.h>
//#include <unistd.h>
#include <math.h> // rint round up math
//#include "/usr/local/include/wiringPiSPI.h"

#include <math.h> // rint round up math libraray lm

using namespace std;

#include "stdafx.h"

//#include "flash_DTR.h" // flash DTR via USB port
/* CCC temp out
#include "AD9851.h" // AD9851 via SPI / I2C
#include "LCD_SPI.h" // LCD via SPI
*/

//#include "MY_wiringPi.h" // GPIO for RPi

//#include "LCD.h" // TEST CLASS
//#include "TESTCLASS.h" //
//#include "LCDSPI.h" // NO SPACE

#include "TESTCLASS1.h"

int main() {
cout << "NEW *** COPY 2 TEST output HF_VNA_CROSS_CPP CPP Managed project" << endl; // prints CPP Managed project

//temp bypass CCC
// class test block start
{
#ifdef MY_DEBUG
cout << " process code block START"<< endl;
cout << "*** TRACE file " << __FILE__<< endl;
cout <<" function " <<__FUNCTION__<<endl;
cout << " line " << __LINE__<< endl;
#endif
//LCD__SPI lcd; // double space INSTATIATE CLASS
//lcd.TestFunction();
TEST_CLASS_1 test_class;
test_class.TestFunction();

}
// class test block end
// */
return 43;

#ifdef MY_DEBUG
cout << "*** TRACE file " << __FILE__<<" line " <<__LINE__<< " function "<< __FUNCTION__ << endl;
//return 42;
#endif


//flash();
// process code block START
{
#ifdef MY_DEBUG
cout << " process code block START"<< endl;
cout << "*** TRACE file " << __FILE__<< endl;
cout <<" function " <<__FUNCTION__<<endl;
cout << " line " << __LINE__<< endl;
#endif
// process code block END
#ifdef MY_DEBUG
cout << " process code block END"<< endl;
cout << "*** TRACE file " << __FILE__<< endl;
cout <<" function " <<__FUNCTION__<<endl;
cout << " line " << __LINE__<< endl;
#endif
}

/* temp bypass CCC
// class test block start
{
LCD lcd; // INSTATIATE CLASS

//lcd.TestFunction(10);
}
// class test block end
*/
}

#ifndef TESTCLASS1_H_
#define TESTCLASS1_H_

#include "stdafx.h"

class TEST_CLASS_1 
{
    public:
        TEST_CLASS_1(){}
        virtual ~TEST_CLASS_1(){}

        int TestFunction(void){return 1;}
};

#endif 

Vaclav_Sal wrote:

I am sorry you went thru all this , but the issue is not in compiling.
The code just need those "redefinitions" to work, it compiles fine.