(c) operator

Operator 1, arithmetic operators

Note: ①++ and – can appear either to the left of the operand or to the right, but the result is a different drop




②/refers to the addition of the integer part, the decimal point is omitted;

2, assignment operator

Note: ① only write Three+=one can, do not write int three+=one;

②public static void Main (string[] args) with a pair of {}
Fill in the specific instructions, only with this one, do not open a pair of {}, because only run out of the first {} instruction, so all in the first {} write on the line, rest assured that as long as there is the corresponding output System.out.println ("Three%= one ==>:" +three ) can

3, Comparison operators

①>, <, >=, <= only support the left and right sides of the operand is a numeric type;
The operands on both sides of ②==,! = can be either numeric types or reference types;
③a==b represents a equals b;a=b value for B is assigned to a (AB can be a number, or it can be a string);

4, logical operators

①true and False are the Boolean numbers that are recognized in Java and can be used directly:
Boolean c=true;
②system.out.println ((c&&d) + ": Failed"), and System.out.println ("a equals B:" + (a==b));

Shortcut key: Ctrl + Z to undo the last; Ctrl+y to move on to the next

5, conditional operator

Syntax form: boolean expression? Expression 1: Expression 2
Operation procedure: Returns the value of expression 1 if the value of the Boolean expression is true, otherwise returns the value of expression 2

Because the value of the expression 8>5 is true, the output: 8 is greater than 5

6, priority

In fact, you can add () to make it a priority

(c) operator