Arithmetic operators in java

Arithmetic Operators :

You must be friendly arithmetic expressions in mathematics like  A-B. In this expression A and B are Operands and the subtraction sign -  is the operator. The same terminology is also used here in the programming language.

Type of Arithmetical Operators :

1. Binary Arithmetical Operators
2.  Unary Arithmetical Operators

Binary Arithmetical Operators :

Operation	Operator (Symbol)	Syntax	Result if a= 22, b=5
Addition	+	a+b	27
Subtraction	-	a-b	17
Multiplication	*	a*b	110
Division	/	a/b	4
Modulus/Remainder	%	a%b	2

 Unary Arithmetical Operators :

Operator	Use	Description
++ Post - increment	A++	Post-increment: The value is assigned before the increment is made , e.g.  A=1 B=A++ Then B will hold 1 and A will Hold 2
– Post-Increment	A--	Post-decrement: The value is assigned before the decrement is made , e.g. :  A=1; B=A--; Then B will hold 1 and A will hold 0.
++ pre-Increment	++A	Pre-Increment:  The value is assigned after the increment is made. e.g :  A=1; B=++A; Then B will hold 2 and A will hold 2.
– pre-decrement	--A	Pre-decrement: the value is assigned after the decrement is made, e.g:  A=1; B=--A; Then B will hold 0 and will hold 0.

 

Solved Example :

int a=7,b=5;c;

c = ++a*4+b++;

System.out.println(c);

Ans: 37

 

int x=5; y=4; z ;

z = x*y++  +  ++x/y;

System.out.println(z);

Ans :21

 

int p=6,q=15, r;

r = (p*q) + p/q;

System.out.println(r);

Ans :10

 

int a=5, b=10, 

a = a+b++ + --b+b

System.out.println(a);

Ans :35

 

int m = 10, n=12, p;

p = (m++ *n++)+ --n/2;

System.out.println(p);

Ans :126

 

Order of precedence :

In Java, as in many programming languages, expressions within parentheses are evaluated first, followed by multiplication (*), division (/), and modulus (%) operators, and then addition (+) and subtraction (-) operators.

1.            →      ()
2.            →       * , % , /
3.            →        + , -

Example : 

10+20/5-3*2

5*(10+5)+10-5

(6 + 2) * 3 - 5

10 - 3 * (5 + 2)

4 * (7 - 3) / 2 + 5

(10 + 4) / (7 - 2) * 3

8 * (6 + 2) - 4 / 2

6 - (3 * 2 + 4) / 2

(10 + 4) / (7 - 2) * 3

 

 

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