Answer:
A lot can happen, depending on the use of the variable
Explanation:
Lets create a position variable, a common variable in games.
Vector3 position = new Vector3(0, 0, 0);
The above variable initialization creates a new Vector3 object. The Vector3 class contains 3 properties, X, Y, and Z. When you assign the variable 'position' the new Vector3 object, the variable 'position' contains an instance of Vector3 where
X = 0,
Y = 0,
and Z = 0.
The variable 'position' can be used to set the position of a player, or an object.
We can reuse this variable when you want the object or player to move.
position.X = 29
position.Y = -14
position.Z = 47
now the object/player's position is (29, -14, 47).
Variables can be used for basically everything you need in programming, from storing a position, to storing the result of a complex math equation.