标签：binary use used when Operators 30 day2 variable operator
Operators
These allow you to perform certain operations on your data. There are 3 basic types:
- Unary: operates on 1 operand
- Binary: operates on 2 operands
- Ternary: operates on 3 operands
Arithmetic Operators
The binary operators used for arithmetic are as follows:
+: Additive-: Subtraction*: Multiplication/: Division%: Remainder (modulo)
Additional Operators
+: A binary operator used for String concatenation++: This unary operator is used to preincrement 前自增(increment by 1 before use) when prepended to a variable name or postincrement 后自增(increment by 1 after use) when appended to a variable.--: This unary operator is used to predecrement 前自减(decrement by 1 before use) when prepended to a variable name or postdecrement 后自减(decrement by 1 after use) when appended to a variable.!: This unary operator means not (negation). It's used before a variable or logical expression that evaluates to true or false.==: This binary operator is used to check the equality of 2 primitives.!=: This binary operator is used to check the inequality of 2 primitives.<,>,<=,>=: These are the respective binary operators for less than, greater than, less than or equal to, and greater than or equal to, and are used to compare two operands.&&,||: These are the respective binary operators used to perform logical AND and logical OR operations on two boolean (i.e.: true or false) statements.? :This ternary operator is used for simple conditional statements (i.e.: if ? then : else).
标签：binary,use,used,when,Operators,30,day2,variable,operator 来源： https://www.cnblogs.com/helloworld7/p/10454449.html
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