Arithmetic operators

Arithmetic operators are:Focuz

2. operator difference in numbers –

3. operator product numbers *

4.  operator quotient of numbers /

5. operator of the remainder (modulo)%

6.  increment and decrement operators:   ++ and —

Operators +, -, *, / and% for the operands is a numerical equivalent of the well-known mathematical operations.

Operators ++ and – –  are unary.    The operator ++ is used to increase one of its operand and the operator – the same decrease the value.

public class operators {
public static void main (String [] args) {
int a = 5;
int b = 4;
int c = a + b;                            // = 9
c = a-b;                                    // = 1
c = a * b;                                 // = 20
c = a / b;                                 // = 1  as the 4 * 1= 4, and is residues 1
c= a % b;                               // 1 = remainder
}
}

A very important role to play in programming operators increment and decrement. They are used to increase or decrease the value of a variable by 1. They are therefore often used in loops.

There are two kinds of them:

prefix – increase the value before assigning

 

inta = 6;
intb = 3;
int c = a + b++;                                // C = a + b, and only then b = b + 1;

c = (a ++) + b;                             // C = a + b, then a = a + 1

 

 

int x = 5;
System.out.println (x ++);
System.out.println (x);
will display twice the number 6,

while the effect of start up code:

int x = 5;

System.out.println (x ++);
System.out.println (x);
will display the number 5 and then the number 6.
Instructions System.out.println (++ x) makes the first is incremented value of the variable x and then this value is read and displayed. Instructions System.out.println (x ++) has the semantics, the first is taken and displayed value of the variable x, and then this value is incremented.

 

 

Cookies help us deliver our services. By using our services, you agree to our use of cookies. More Info | Close