Clash Royale CLAN TAG#URR8PPP

Simple MPI message passing program stuck in loop

I'm writing this MPI program where two processes pass messages back and forth to one another. My issue is that the program is stuck in an infinite loop. The issue is most certainly with my send and receive commands, I'm not familiar with using them and I'm not sure what is wrong with them.

Here is the code:

#include <mpi.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

#define COUNTS 5

int main(int argc, char *argv)
int id;
int p;

MPI_Init(NULL, NULL);
MPI_Comm_rank(MPI_COMM_WORLD, &id);
MPI_Comm_size(MPI_COMM_WORLD, &p);

int num = 0;
if (id == 0)
tic = MPI_Wtime();
for (int i = 0; i < COUNTS; i++)
MPI_Ssend(&num, 1, MPI_DOUBLE, 1, 0, MPI_COMM_WORLD);

MPI_Recv(&num, 1, MPI_DOUBLE, 1, 0,
MPI_COMM_WORLD, MPI_STATUS_IGNORE);


else
for (int j = 0; j < COUNTS; j++)
MPI_Recv(&num, 0, MPI_DOUBLE, 0, 1,
MPI_COMM_WORLD, MPI_STATUS_IGNORE);

MPI_Ssend(&num, 0, MPI_DOUBLE, 0, 1, MPI_COMM_WORLD);



MPI_Finalize();




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