Arithmetic Operators - Web Development and Design | Tutorial for Java, PHP, HTML, Javascript Arithmetic Operators - Web Development and Design | Tutorial for Java, PHP, HTML, Javascript

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Monday, March 25, 2019

Arithmetic Operators

Arithmetic Operators

Addition                                       +
Subtraction                                  -
Multiplication                              *
Division                                         /
Remainder                                  %
Increment                                    ++
Addition Assignment                  +=
Subtraction Assignment              -=
Multiplication Assignment         *=
Division Assignment                    /=
Modulus Assignment                 %=    
Decrement                                    --

Arithmetic Operators




üIf either or both operands associated with an arithmetic operator

 are floating point, the result is a floating point.



ü% operator applies both to floating-point type and integer types.


üExample:

 
class modulus

{

  public static void main (String args [])


  {

  int x = 42;

  double y = 42.3;

  System.out.println(“x mod 10 =“ + x%10);

  System.out.println(“y mod 10 = “ + y%10);

  }

}

Output:


x mod 10 =2


y mod 10 = 2.3


Increment and Decrement


üThe increment and decrement operators are
 arithmetic and operate on one operand
üThe increment operator (++) adds one to its 
operand
üThe decrement operator (--) subtracts one from
 its operand
üThe statement  count++;
is functionally equivalent to   count = count + 1;
Increment and Decrement
üThe increment and decrement operators can be
 applied in prefix form (before the operand) or
postfix form (after the operand)

üWhen used alone in a statement, the prefix and 
postfix forms are functionally equivalent.  That is,
  count++;
  is equivalent to ++count;
Increment and Decrement
üWhen used in a larger expression, the prefix and 
postfix forms have different effects

üIn both cases the variable is incremented
 (decremented)

üBut the value used in the larger expression depends on
 the form used.

üIf count currently contains 45, then the statement  total
 = count++;
    assigns 45 to total and 46 to count
üIf count currently contains 45, then the statement  total
 = ++count;
  assigns the value 46 to both total and count

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