int A[6];
X = [1 3 5 7 9 11]
for ( k=0; k<6; k++ ) { ... }
X = [12 9 6 3 0 -3]
X = [0 3 4 7 8 11]
X = [1 2 4 8 16 32]
X[0] = 1; for ( k=1; k<6; k++ ) { ... }
A = [2 4 1 0 3]
cout << A[A[3]];
X = [3 2 1 0 4]
for(i=0; i<5; i++) { X[i] = X[i]+2; }
cout << X[4];
for ( k=0; k<N; k++ ) cout << ... << endl;
k = 0; while ( k < N ) { cout << A[k] << " "; ... }