From 22cd83bfe64f30db2618988e2bc9587d6341815d Mon Sep 17 00:00:00 2001
From: Vanessa Vichi <v.vichi3@A3-dott8.polo2.sid.unipi.it>
Date: Wed, 24 Apr 2024 16:50:48 +0200
Subject: [PATCH] added

---
 Makefile       |  4 +++-
 easysendrecv.c | 17 +++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 easysendrecv.c

diff --git a/Makefile b/Makefile
index 8946058..54bb52f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,11 @@
 MPICC = mpicc
 CFLAGS += -g
-all: example example2
+all: example example2 easysendrecv
 example: example.c
 	$(MPICC) $(CFLAGS) $(LDFLAGS) $? $(LDLIBS) -o $@
 example2: example2.c
 	$(MPICC) $(CFLAGS) $(LDFLAGS) $? $(LDLIBS) -o $@
+easysendrecv: easysendrecv.c
+	$(MPICC) $(CFLAGS) $(LDFLAGS) $? $(LDLIBS) -o $@
 clean:
 	rm -f example example2
diff --git a/easysendrecv.c b/easysendrecv.c
new file mode 100644
index 0000000..13f8bde
--- /dev/null
+++ b/easysendrecv.c
@@ -0,0 +1,17 @@
+#include "mpi.h"
+#include <string.h>
+#include <stdio.h>
+int main( int argc, char **argv){
+char message[20]; int myrank; MPI_Status status;
+MPI_Init( &argc, &argv );
+MPI_Comm_rank( MPI_COMM_WORLD, &myrank );
+if (myrank == 0){ /* code for process zero */
+strcpy(message,"Hello, there");
+MPI_Send(message, strlen(message)+1, MPI_CHAR, 1, 99, MPI_COMM_WORLD);
+}
+else if (myrank == 1){ /* code for process one */
+MPI_Recv(message, 20, MPI_CHAR, 0, 99, MPI_COMM_WORLD, &status);
+printf("received :%s:\n", message);
+}
+MPI_Finalize();
+return 0; }