int* even(int* A, int N, int* M){
	int i=0,j=0;
	int *B;
	B = (int *)calloc(N,sizeof(int));
	while ((A[i++]%2==0) && (i<N))
		B[j++] = A[i];

	*M = j;
	return B;

	}//end_even