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

Discussion in 'C' started by Flexline, Jan 28, 2010.

  1. Flexline

    Flexline New Member

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

    shabbir Administrator Staff Member

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    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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