The numbers (in an arithmetic operation) are called operands. The operation (to be performed between the two operands) is defined by an operator.
| Operand | Operator | Operand |
|---|---|---|
| 100 | + | 50 |
Adding: The addition operator (+) adds operands:
var x = 5, y = 2, z = x + y; (The value of z is 7)
Subtracting: The subtraction operator (-) subtracts operands: var x = 5, y = 2, z = x - y; (The value of z is 3)
Multiplying: The multiplication operator (*) multiplies operands: var x = 5, y = 2, z = x * y; (The value of z is 10)
Dividing: The division operator (/) divides operands: var x = 5, y = 2, z = x / y; (The value of z is 2.5)
Modulus: The modular operator (%) returns the remainder from the division of operands: var x = 5, y = 2, z = x % y; (The value of z is 1)
In computing, the modulo operation (called modulus) finds the remainder after division of one operand by another. In this case, 5 ÷ 2 = 2 with 1 remaining as the leftover.
Incrementing: The increment operator (++) increments operands:
var x = 5;
x++;
var z = x; (The value of z is 6)
The increment operator increments (adds 1 to) its operand and returns a value.
Decrementing: The decrement operator (--) decrements operands:
var x = 5;
x--;
var z = x; (The value of z is 4)
The decrement operator decrements (subtracts 1 from) its operand and returns a value.
