Go4Expert - ifndef; endif Statement?? Can someone explain what is the following code mean??

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Flexline

29Jan2010 01:24

ifndef; endif Statement?? Can someone explain what is the following code mean??

/* Controller handle */
#if defined(__cplusplus)
extern "C" {
#endif
typedef struct _MPIControl *MPIControl;
#if defined(__cplusplus)
}
#endif

shabbir

29Jan2010 11:03

Re: ifndef; endif Statement?? Can someone explain what is the following code mean??

It means

Code:

#if defined(__cplusplus)

extern "C" {

#endif

If __cplusplus is defined I declare the statement extern "C" {

else

Code:

typedef struct _MPIControl *MPIControl;

Code:

#if defined(__cplusplus)

}

#endif

If __cplusplus is defined I close the braces I opened before.

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