What does II mean in c language?

In C language, "II" represents the postfix operator, which is used to increment the value of a variable or pointer expression by 1.

In C language, the meaning of II

In C language, II is an operator (since The suffix form of the increase operator) has the following functions:

Operation object:
The postfix operator can only be applied to variables or pointer expressions.

Operation effect:

• Increase the value of the operation object by 1.

Syntax:

<code class="c">variable++</code>

Note:

• The postfix operator has higher priority, only Secondary to the suffix -- and the unary, - operator.
• Operators can be used as part of an expression or as a separate statement.
• The return type of the operator is the same as the type of the operation object.

Example:

<code class="c">int x = 5;
x++; // 等价于 x = x + 1</code>

After executing the above code, the value of variable x will increase by 1 and become 6.

The difference between suffix and prefix:

• Suffix The operator first obtains the value of the operation object and then increments it.
• Prefix The operator first increments the value of the operation object and then obtains the value.

Therefore, when you need to obtain the value of the operation object first and then perform the auto-increment operation, you should use the suffix.

The above is the detailed content of What does II mean in c language?. For more information, please follow other related articles on the PHP Chinese website!