Increment or Decrement integers in apex

To increase or decrease numeric values in apex, the increment (++) and decrement (--) operators can be used. These operators increase or decrease the numeric value by one .

The position of the operator (before or after the variable) determines when the value is updated during execution.

Operator	Usage	Example
Increment (++)	Increase the value by one and it can be used after the variable.	`Integer x = 5; x++; // x becomes 6 (after increment)`
Decrement (--)	Decrease the value by one and it can be used after the variable.	`Integer x = 5; x--; // x becomes 4 (after decrement)`
Increment (++)	Increase the value by one and can be used before the variable.	`Integer x = 5; ++x; // x becomes 6 (before using)`
Decrement (--)	Decrease the value by one and can be used before the variable.	`Integer x = 5; --x; // x becomes 4 (before using)`

The increment and decrement operators are commonly used in loops and conditional statements.

The following example shows how to increment a variable value before and after it is used.

In the above example:

The variables count, currentCount, items, newItems are Integer variables.
The operator ++ on count variable, increment the value of count by one before it is assgined to currentCount.
The operator ++ on items variable, increment the value of count by one after it is assgined to newItems.

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