Macro problem

[rag84dec]

Hi
I have a Macro defined in one header file say "xyx.h"
say

#ifdef UNREL
  #define PURPOSE            "I am learning"
  #define TIME        "14"
#else
  #define PURPOSE                        "Me"
  #define TIME         "14"
#endif

in another file say "abc.cpp" i want to use the PURPOSE macro which gives "I am learning"
What should i do??.....i tried this
In "abc.cpp" i defined #define UNREL
then
[code]
#ifdef UNREL
string s=PURPOSE
#endif
[/code/

But the value "I am learning" is not coming......

PLease help

[riteshsingh81]

Hi
I have a Macro defined in one header file say "xyx.h"
say

#ifdef UNREL
  #define PURPOSE            "I am learning"
  #define TIME        "14"
#else
  #define PURPOSE                        "Me"
  #define TIME         "14"
#endif

in another file say "abc.cpp" i want to use the PURPOSE macro which gives "I am learning"
What should i do??.....i tried this
In "abc.cpp" i defined #define UNREL
then
[code]
#ifdef UNREL
string s=PURPOSE
#endif
[/code/

But the value "I am learning" is not coming......

PLease help

>>>>>>>>>
In your abc.c , before including "xyz.h" use #define UNREL .

[riteshsingh81]

Hi
I have a Macro defined in one header file say "xyx.h"
say

#ifdef UNREL
  #define PURPOSE            "I am learning"
  #define TIME        "14"
#else
  #define PURPOSE                        "Me"
  #define TIME         "14"
#endif

in another file say "abc.cpp" i want to use the PURPOSE macro which gives "I am learning"
What should i do??.....i tried this
In "abc.cpp" i defined #define UNREL
then
[code]
#ifdef UNREL
string s=PURPOSE
#endif
[/code/

But the value "I am learning" is not coming......

PLease help

>>>>>>>>>
In your abc.c , before including "xyz.h" use #define UNREL .

[pntkiran]

>>>>>>>>>
In your abc.c , before including "xyz.h" use #define UNREL .

Hi rag84dec,
Sample code for your question.
That will solve your problem.

#define UNREL
#include "xyz.h"
#include <iostream>
using namespace std;
int main() {

cout << PURPOSE<<endl;
}

Regards,
Kiran Parmar

[weaknessforcats]

#define UNREL
#include "xyz.h"
#include <iostream>
using namespace std;
int main() {

cout << PURPOSE<<endl;
}

I recommend the #define UNREL be used as a command line define when you execute the compiler:

cl myprog.cpp -DUNREL

Failing that, put it in a header file of its own and include the header file. You have to avoid a situation where you need to change the source code to chnage the #define since you need to do this in every source file.