Gyan Teps

C++ Operators

All C language operator are valid in c++

1. Arithmatic Operator(+,-,*,/,%)
2. Relational Operator(<,<=,>,>=,==,!=)
3. Logical Operator(&&,||,!)
4. Assingment Operator(+=, -=, *=, /=)
5. Increment and Decrement Operators(++,--)
6. Conditional Operator(?:)
7. Bitwise Operator(&,|,^,<<,>>)
8. special Operatora()

Arthmetic Operator

Operators	Example	Meaning
+	a+b	Addition
-	a-b	Subtraction
*	a*b	Multiplaction
/	a/b	Division
%	a%b	Modulas(Division remainder)

Relational Operator

Operators	Meaning
<	less than
<=	less than or equal to
>	greater than
>=	greater than or equal to
==	Equal to
!=	Not Equal to

Logical Operator

Operators	Meaning
&&	Logical AND
||	Logical OR
!	Logical NOT

Example of conditions

a	b	a&&b	a||b
true	true	true	true
true	false	false	true
false	true	false	true
false	false	false	false

a&&b: return false if any of the expression is false

a||b: return true if any of the expression is true

Assingment Operator

We assign a value to a variable using the basic assingment operator(=)
Assingment operators stores a value in memory.
left side_{(always it is a variable identifier)} = right side_{(it is either a literal/ a variable identifiers/ an expression)} literal : ex i=1;
variable identifers: ex. start = i;
Expression : ex.sum= first + second;

Assingment Operators(Short hand)

Syntax

leftside op = rightside;
Ex:

x=X+3;
X+=3;

Simple Assingment Operator	Shorthand Operator
a=a+1	a+=1
a=a-1	a-=1
a=a*(m+n)	a*=m+n
a=a/(m+n)	a/=m+n
a=a%b	a%=b

Increment and Decrement Operators

Increment ++

The ++ Operator used to increase he value of the variable by one.

Eg -
x=100;
x++;
After the execution the value of x will be 101.

Decrement --

The -- Operator used to decrease the value of the variable by one.

Eg -
x=100;
x--;
After the execution the value of x will be 99.

Pre & Post Increment Operator

Operator	Discription
Pre-increment Operator(++x)	value of x is incremented before assigning it to variable on the left
x=10; p=++x;	after exection x will be 11 p will be 11

Operator	Discription
Post-increment operator(x++)	Values of x is incremented after assigning it to the variables on the left
x=10; p=x++;	after execution x will be 11 p will be 10

Pre & Post Decrement Operator

Operator	Discription
Post-decrement operator(--x)	Values of x is decremented before assigning it to the variables on the left
x=10; p=--x;	after execution x will be 9 p will be 9

Operator	Discription
Post-decrement operator(x++)	Values of x is decremented after assigning it to the variables on the left
x=10; p=x--;	after execution x will be 9 pwill be 10