C++ variables
Variables are the way that our C++ games store and manipulate values/data. If we want to know how much health the player has, we need a variable. Perhaps you want to know how many zombies are left in the current wave. That is a variable as well. If you need to remember the name of the player who got a high score, you guessed it—we need a variable for that. Is the game over or still playing? Yes, that's a variable too.
Variables are named identifiers for locations in the memory of the PC. The memory of the PC is where computer programs are stored as they are being executed. So, we might name a variable numberOfZombies and that variable could refer to a place in memory that stores a value to represent the number of zombies that are left in the current wave.
The way that computer systems address locations in memory is complex. Programming languages use variables to give us a human-friendly way to manage our data in that memory.
The small amount we have...