how to solve this problem,Could every body please give me any suggestion?

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  1>------ Build started: Project: MPI001, Configuration: Debug Win32 ------
  1>  main.cpp
  1>main.obj : error LNK2019: unresolved external symbol _MPI_Comm_size@8 referenced in function "int __cdecl _tmain(int,char * * const)" (?_tmain@@YAHHQAPAD@Z)
  1>main.obj : error LNK2019: unresolved external symbol _MPI_Comm_rank@8 referenced in function "int __cdecl _tmain(int,char * * const)" (?_tmain@@YAHHQAPAD@Z)
  1>main.obj : error LNK2019: unresolved external symbol _MPI_Get_processor_name@8 referenced in function "int __cdecl _tmain(int,char * * const)" (?_tmain@@YAHHQAPAD@Z)
  1>main.obj : error LNK2019: unresolved external symbol _MPI_Init@8 referenced in function "int __cdecl _tmain(int,char * * const)" (?_tmain@@YAHHQAPAD@Z)
  1>main.obj : error LNK2019: unresolved external symbol _MPI_Finalize@0 referenced in function "int __cdecl _tmain(int,char * * const)" (?_tmain@@YAHHQAPAD@Z)
  1>LIBCMTD.lib(crt0.obj) : error LNK2019: unresolved external symbol _main referenced 

  #include "mpi.h"
  #include <stdio.h>
  #include <math.h>
  #pragma comment (lib, "msmpi.lib")
  
  int _tmain(int argc, char* argv[])
  {
  	int myid, numprocs;
  	int namelen;
  
  	char processor_name[MPI_MAX_PROCESSOR_NAME];
  
  	MPI_Init(&argc, &argv);
  	MPI_Comm_rank(MPI_COMM_WORLD, &myid);
  	MPI_Comm_size(MPI_COMM_WORLD, &numprocs);
  	MPI_Get_processor_name(processor_name, &namelen);
  
  	fprintf(stderr, "Hello World! Process %d of %d on %s\n", myid, numprocs, processor_name);
  
  	MPI_Finalize();
  	return 0;
  }

  
  

  Wednesday, December 2, 2015 6:22 AM