How it+ differs from ++i

Often a novice programmer gets lost in these i ++ and ++ i. In this short post, we will try to clarify the material so that there is no doubt that you will never get confused and will definitely correctly decide which option should be used in a particular case. Perhaps you need to start with a definition. The ++ operator is shorthand for increment. In other words, this operator is used to add 1 to a variable.

But why, and most importantly, in what cases i ++! = ++ i? The fact is that the increment operation, like other operations, returns the result of the same operation. What is important is the result! Having understood this, there will be no more questions.

I++ increment operation
This operation returns the value of I before 1 is added to I.
Increment operation ++ I This operation returns I after the addition operation I + 1

Now to consolidate the material, I will give a few examples.

Example 1: while loop
As we can see in the first case i value is displayed after the addition operation and in the second case: before.

Example 2: for loop
In this case, in fact, nothing changes. Those. whether you use ++ i or i ++, in the body of the loop we get i = i + 1. Therefore, you should not rack your brains over this at all. It all depends on the preferences of the programmer and does not affect the course of the program in any way.

The following example is identical to example 1 with a while loop: