Visual c++ infinite while loop - visual-c++

Question

In visual c++ in express 2013 for Windows desktop I made a ASCII roguelike but the following code is messing it all up.in the game when u defeat.a enemy you get experience which get added to players and levels up if enough.here is the code.it is in a player class I created.
It printed Leveled up to .. no of times I press any key like the while loop never ends .presses a key leveled appears then again I presses a key leveled up appears it keeps on going
void Player::addExperience(int experience){_experience += experience;
while(_experience >50) {
_experience -= 50;
_level++;
printf("Leveled up%s",_level);
_getch();
}
}
When I changed the code to ->
void Player::addExperience(int experience) {_experience += experience;while(_experience >50) { _experience = 0;_level++/printf("Leveled up%s",_level);
_getch();
}
}
It printed only one time leveled up to .. So I know the problem is in this code but what. don't know.

Answer 1

I re-read your description few times to understand your problem. I hopt I understood it correctly.
We don't know the value of experience. Unless it keeps chaning in the background, the loops are supposed to run infinite number of times OR zero times based on value of experience.
The first fragment of code increments level by 1 each time it decreases _experience by 50. But, the while loop checks for experience instead of _experience, so the loop never breaks.