#include<mpi.h>
#include<stdio.h>
#define MCW MPI_COMM_WORLD
int main(int argc, char **argv)
{
	int n,rank;
	MPI_Init(&argc,&argv);
	MPI_Comm_rank(MCW,&rank);
	if (rank==0)
	{
		printf("donner un entier:");
		scanf("%d",&n);
	}
	MPI_Bcast(&n,1,MPI_INT,0,MCW);
	printf("I'm process %d : n=%d\n",rank,n);
	MPI_Finalize();
}