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Prefix increment and decrement operators: + + and-Grammar
+ + Unary-expression––unary-expression
NoteThe prefix increment operator (+ +) adds 1 to its operand, which is the result of an expression. The operand must be a left value that is not a
1. Increment decrement operatorThe C + + language does not require that the increment decrement operator be a member of a class. But because they change exactly the state of the object being manipulated. Therefore, it is recommended to set the
Absrtact: In C language teaching, the self-increment self-subtraction operator is widely used, and it has certain skill and difficulty. Among the many operators, the self-increment decrement operator is the most difficult to understand and the most
Increment decrement operator
Before increment ++++ $a $ A increments by 1 and then returns $ A
After increment + + + $a first return $ A, then $ A since 1
Before decrement----$a $ A self minus 1 and then return $ A
After decrement--$a--returns $ A,
Prefix and suffix of the auto-increment and auto-increment operators, and suffix of the operator prefix.
There is such a question in the exam:
12
inta = 4;(++a) += i;
Evaluate the value of a. The correct answer is 10.
If you think
Transferred from: http://bbs.csdn.net/topics/330189207C language's self-increment + +, self-subtraction-operator has always been a problem for beginners, and even a lot of veteran will be confused, recently I saw a problem on the Internet:#include
overloaded operators and conversions--Self-increment/self-decrement operatorIntroduction:Self-increment, the decrement operator is often implemented by classes such as iterators that provide pointers-like behavior to access elements in a sequence.
In JavaScript, incrementing decrements belong to the unary operator, the so-called unary operator, which is an operator that can manipulate only one value.Increment and decrement operators are available in two versions: pre-and post-built. As the
Like C, Java provides a rich shortcut for computing. These shortcuts can make the code more refreshing, easier to input, and easier for readers to read.Two good shortcuts are the increment and decrement operators (often referred to as "AutoIncrement"
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