Description:
The value of a variable will undergo a certain computation with an expression to assign a new value to the variable.
Syntax:
a?=x
Note:
A variable value will undergo a certain computation with an expression to assign a new value to the variable.
Parameter:
|
a |
Variable name |
|
x |
Legal expression |
|
? |
An operator, which can be +, -, *, /, \, and % |
Return value:
New variable
Example:
|
|
A |
|
|
1 |
=a=7 |
|
|
2 |
=a-=4 |
3 |