Question

How to handle when there is a new SW Release sometime and it adds another index to switch case. Index represents a parameter in this case. For example,

Rel1: i = 1-5, 7 (excluding 6)

Rel2: i = 1-7

for (int i = 1; i<=7;i++)
{
  switch (i)
  {
    case 1: /*process data*/ break;
    case 2: /*process data*/ break;
    case 3: /*process data*/ break;
    case 4: /*process data*/ break;
    case 5: /*process data*/ break;
    // case 6: // REL 2
    case 7: /*process data*/ break;
    default: break;
  }
}

Can I actually check by adding if statement between those cases? Any better idea?

Answer 1

#define which release is this and then use #ifdef.

  switch (i)
  {
    case 1: /*process data*/ break;
    case 2: /*process data*/ break;
    case 3: /*process data*/ break;
    case 4: /*process data*/ break;
    case 5: /*process data*/ break;
#ifdef REL_2
    case 6: /*process data*/ break;  // <-- executed only for REL_2
#endif
    case 7: /*process data*/ break;
    default: break;
  }