passing 2 dimen array to a function

#include "stdio.h"
#define M 3
#define N 5
void fstore2D(int a[][N]);
void fretrieve2D(int a[][N]);
int main()
{
int a[M][N];
printf("Input data in matrix (%d X %d)\n", M, N);
fstore2D(a);
fretrieve2D(a);
return 0;
}
void fstore2D(int a[][N])
{
int i, j;
for ( i = 0; i < M; ++i )
{
for ( j = 0; j < N; ++j )
scanf("%d", &a[i][j]);
}
}
void fretrieve2D(int a[][N])
{
int i, j;
for ( i = 0; i < M; ++i )
{
for ( j = 0; j < N; ++j )
printf("%6d ", a[i][j]);
printf("\n");
}
}