What's the Difference Between `i ` and ` i` in C#?

C#, what is the fundamental difference between

and ? i i In C#, the effects of incremental computing symbols and

are different, mainly reflected in the order of the event and the results of the return. The following are the in -depth explanations of distinguishing these two operators:

i <.> 1. In the order of the incident: i

In contrast to common misunderstandings, and follow the same event order. The prefix form (i) and the suffix form (i) only vary from the value of the last step to be modified.

<.> 2. Return value: i i

The key difference is the return value:

(suffixes of suffix):

The original value of

before the increasing increase. The increasing effect is only reflected in the follow -up use of

.
• i (prefix increment): The value of i after the increasing increase. This modified value can be used immediately for further calculation. i
• <.> 3. Side effect: i The main side effects of these two operators are increasing the value of i. This operation is irreversible, and the value update variable
will be used after increasing value.

<.> 4. Example:

i Increase i before using the value of , please use

.

Use to add value immediately, please use
• .

  i i i

  Other precautions:

  <code class="language-C#">  int i = 1;
    int result = i++ + 1; // result = 2, i = 2</code>

• The values ​​returned by these two operators are based on the temporary copy of

  , not the value updated in the variable. i i The suffix is ​​returned to the old value, and the prefix is ​​returned to the new value.

  <code class="language-C#">  int i = 1;
    int result = ++i + 1; // result = 3, i = 2</code>

  The execution order of the increasing operation is clearly defined and consistent with these two forms.

prefix and suffix operators have no effect on priority or binding.

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