diff --git a/exercices/solutions/ex3_rotation.c b/exercices/solutions/ex3_rotation.c
index db8838b..fe86d8a 100644
--- a/exercices/solutions/ex3_rotation.c
+++ b/exercices/solutions/ex3_rotation.c
@@ -1,5 +1,5 @@
 #include <stdio.h>
-#include <mpi.h>
+#include "mpi.h"
 #include <stdlib.h>
 #define n 64
 
@@ -7,7 +7,7 @@ int main(int argc, char *argv[])
 {
 
 int i,ierr,proc,nproc,prec,suiv,iter;
-MPI_Status etat[MPI_STATUS_SIZE];
+MPI_Status etat;
 int *A;
 
 ierr = MPI_Init(&argc,&argv);
@@ -15,21 +15,21 @@ ierr = MPI_Init(&argc,&argv);
 ierr = MPI_Comm_size(MPI_COMM_WORLD, &nproc);
 ierr = MPI_Comm_rank(MPI_COMM_WORLD, &proc);
 
-if (proc==0 && (n%nproc /= 0 || n%2 != 0)) {
+if (proc==0 && (n%nproc != 0 || n%2 != 0)) {
    printf("Nombre de processus incompatible avec la taille\n");
    ierr = MPI_Abort(MPI_COMM_WORLD,1);
 }
-A = (int *) malloc((n/proc+1) * sizeof(int));
+A = (int *) malloc((n/nproc+1) * sizeof(int));
 
 for (i=1; i<= n/nproc; i++)
-   a[i]=proc;
+   A[i]=proc;
 
 printf("proc %i iter=0 A = ", proc);
 for (i = 1; i <= n/nproc; i++)
    printf("%i ", A[i]);
 printf("\n");
 
-for (i=1; i<=n; i++)
+for (iter=1; iter<=n; iter++)
 {
   if (proc == 0)
      prec=nproc-1;
@@ -41,20 +41,19 @@ for (i=1; i<=n; i++)
      suiv=proc+1;
 
   if (proc%2 == 0) {
-     ierr = MPI_Send(A[n/nproc],1,MPI_INTEGER,suiv,iter,MPI_COMM_WORLD);
-     ierr = MPI_Recv(A[0],1,MPI_INTEGER,prec,iter,MPI_COMM_WORLD,etat);
+     ierr = MPI_Send(&(A[n/nproc]),1,MPI_INT,suiv,iter,MPI_COMM_WORLD);
+     ierr = MPI_Recv(A,1,MPI_INT,prec,iter,MPI_COMM_WORLD,&etat);
   }
   else {
-     ierr = MPI_Recv(A[0],1,MPI_INTEGER,prec,iter,MPI_COMM_WORLD,etat);
-     ierr = MPI_Send(A[n/nproc],1,MPI_INTEGER,suiv,iter,MPI_COMM_WORLD);
+     ierr = MPI_Recv(A,1,MPI_INT,prec,iter,MPI_COMM_WORLD,&etat);
+     ierr = MPI_Send(&(A[n/nproc]),1,MPI_INT,suiv,iter,MPI_COMM_WORLD);
   }
   for (i=n/nproc; i>=1; i--)
      A[i]=A[i-1];
-  print '(A,i2,A,i3,A,64i5)', 'proc=',proc,' iter=',iter,' A=',A(1:n/nproc)
-printf("proc %i iter=%i A = ", proc,iter);
-for (i = 1; i <= n/nproc; i++)
-   printf("%i ", A[i]);
-printf("\n");
+  printf("proc %i iter=%i A = ", proc,iter);
+  for (i = 1; i <= n/nproc; i++)
+     printf("%i ", A[i]);
+  printf("\n");
 }
 free(A);
 ierr = MPI_Finalize();