MPI send and receive in random mode

i'm tring to make each process to send random value to two random destination ,destination1 and destination2 .each process print what send and receive.

this is code:

   #include "mpi.h"
               #include "head.h"
               #include<iostream>
               #include <random>
               #include <vector>
               #include <time.h>


               int main(int argc, char *argv[])

               {

                   int my_rank,rc,destination1,destination2,numpros,count=0,tag;

                   rc = MPI_Init(&argc,&argv);
                   if (rc != MPI_SUCCESS) 
                   {
                     printf ("Error starting MPI program. Terminating.\n");
                     MPI_Abort(MPI_COMM_WORLD, rc);
                   }

                   MPI_Comm_size(MPI_COMM_WORLD,&numpros);
                   MPI_Comm_rank(MPI_COMM_WORLD,&my_rank);
             MPI_Status status; 
            MPI_Request reqs;
                    double buffer=rand() % 6;
                     do {
                          destination1=rand() % numpros;
                          destination2=rand() % numpros;
                      } while ((destination1 == my_rank) && (destination2==my_rank)&&(destination1!=destination2)); //Prevent sending to self
             MPI_Isend(&buffer,1,MPI_INT,destination1,tag,MPI_COMM_WORLD,&reqs);

             MPI_Isend(&buffer,1,MPI_INT,destination2,tag,MPI_COMM_WORLD,&reqs);
            count++;
            vector<head*>array_data;
            for(int i ;i<count,i++){
               array_data[i]=new head;
               array_data[i]->rank=my_rank;
               array_data[i]->rank1=destination1;
               array_data[i]->rank2=destination2;
            }
            MPI_Bcast(&array_data,array_data.size(),MPI_INT,my_rank,MPI_COMM_WORLD);
            for(int j=0,j<array_data.size();j++){
              if(array_data[j].rand1==my_rank||array_data[j].rand2==my_rank)
                 source=array_data[j].rank;
               MPI_Recv(&buffer,1,MPI_INT,source,MPI_ANY_TAG,MPI_COMM_WORLD,&status);
            }

            MPI_Waitall(numprocs, reqs, status);
            printf("process :%d \t\n sent %d to  %d\t\n to %d \n",my_rank,buffer,destination1,destination2);
            printf("process %d  recived %d from %d\n",source,buffer,my_rank);
            MPI_Finalize();
               }

elements of stuct are:

    stuct head {
            int rank;
            int rand1;
            int rand2;
            };

every time i execute program show this error: anysome can help me ?