Gets the process identification.


This API cannot be used in applications that execute in the Windows Runtime. For more information, see CRT functions not supported with /ZW.

int _getpid( void );

Returns the process ID obtained from the system. There is no error return.

The _getpid function obtains the process ID from the system. The process ID uniquely identifies the calling process.



Required header



For more compatibility information, see Compatibility.


// crt_getpid.c
// This program uses _getpid to obtain
// the process ID and then prints the ID.

#include <stdio.h>
#include <process.h>

int main( void )
   // If run from command line, shows different ID for 
   // command line than for operating system shell.

   printf( "Process id: %d\n", _getpid() );
Process id: 3584

.NET Framework Equivalent