Variable is not being updated

Question

So, I'm designing an RPG game and my battle system is not working. I'm fairly new but I have a good understanding of what I have here for the most part. Whenever I run the battle system, the 'eHp' and 'hp' variables are not being updated.

hit = rand() % atk + 1 + (rand() % 3 + 1);
            diff = hit - OppD;
            if (diff > 0)
                eHp = eHp - diff;
            if (eHp <= 0)
                break;
            OppHit = rand() % OppA + 1;
            OppDif = OppHit - def;
            hp = hp - OppDif;
            if (hp <= 0)
                break;

This is inside a switch statement within a while loop. The display for the health points is in the while loop before the switch statement. The switch statement is used to decide which attack the player decides to use. If you need to see more code. Just say how much you need to see and I will update it. Thanks!

Answer 1

Change your block of code to this block of code and paste the output in your question if looking at the output hasn't already solved it for you.

hit = rand() % atk + 1 + (rand() % 3 + 1);
diff = hit - OppD;

std::cout << "hit: " << hit << "\ndiff:" << diff << "\neHP: " << eHp << std::endl;

if (diff > 0) eHp = eHp - diff;
if (eHp <= 0) break;

OppHit = rand() % OppA + 1;
OppDif = OppHit - def;

std::cout << "OppHit: " << OppHit << "\nOppDif: " << OppDif << "\nhp: " << hp << std::endl;

hp = hp - OppDif;

if (hp <= 0) break;

Answer 2

turns out the switch statement condition was in the char data type, but i had the cases as the int data type.