vector to void error

[newdomingo]

Hello,

i would like to ask how to convert std::vector<int, std::allocator<int> > to void* ?

[cire]

If I take you literally, it cannot be converted to void*.

What are you trying to accomplish?

[newdomingo]

i have a vector,

vector<int> V(length);

and i am trying to send the data of the vector

using MPI.

int MPI_Send(void *buf, int count, MPI_Datatype datatype, int dest, int tag,
MPI_Comm comm)

Is it possible to convert the vector V to void* ? If yes, how ?

[cire]

MPI_Send(V.data(), V.size(), /* ... */ );

[JLBorges]

std::vector<int>  vec ;

// ...

//int MPI_Send(void *buf, int count, MPI_Datatype datatype, int dest, int tag, MPI_Comm comm)

int result = MPI_Send( &vec.front(), vec.size(), MPI_INT, dest, tag, comm ) ;

[newdomingo]

Thanks !