This document discusses operators in C++. It describes different types of operators - unary, binary, and ternary - and provides examples of common operators like arithmetic, relational, and logical operators. Specifically, it explains that operators operate on operands to produce results, and classifications of operators are based on the number of operands needed.

1. C++ Language
By:-AAKASH KAUSHIK
#9289817971, 98919893083
Email-theaakashkumar@gmail.com

2. UNIT -4
OPERATORS &
EXPRESSIONS

3. OPERATORS
An operator is a symbol that tells the compiler
to perform specific mathematical or logical
manipulations.
operators operates on some data to give
results
For ex :- A+B=C
Here A, B are operands and + is the
operator which produces C as a result of addition
of A and B.
AAKASH KAUSHIK
9891983083,9289817971

4. CLASSIFICATION OF OPERATORS
Based on the no. of operand needed for
operation operators can be broadly classified into
3 categories.
UNARY OPERATORS
BINARY OPERATORS
TERNARY OPERATORS
AAKASH KAUSHIK
9891983083,9289817971

5. UNARY OPERATORS
The unary operators operate on a
single operand

6. UNARY PLUS(+) & UNARY MINUS(-)
UNARY (–) MINUS – used to represent –ive
values.
ex.:- -5,-50,-3.14 etc.
UNARY (+) PLUS – used to represent +ive
values.
ex.:- +5,+50,+3.14 etc.
In C++ by default values are considered as +ive
so no need to explicitly use UNARY (+)PLUS.
AAKASH KAUSHIK
9891983083,9289817971

7. INCREMENT/DECREMENT OPERATOR
Increment operator increases integer value by one.
For ex.:-
int a=10;
a++; //will give 11
Decrement operator decreases integer value by one.
For ex.:-
int a=10;
a--; //will give 9
AAKASH KAUSHIK
9891983083,9289817971

8. BINARY OPERATORS
The Binary operator takes 2
arguments.

9. TYPE OF BINARY OPERATORS
ARITHMETIC OPERATORS
RELATIONAL OPERATORS
LOGICAL OPERATORS
AAKASH KAUSHIK
9891983083,9289817971

10. ARITHMETIC OPERATORS
Arithmetic operators are used for mathematic
calculations.
AAKASH KAUSHIK
9891983083,9289817971

11. RELATIONAL OPERATORS
A relational operator compares two operands to
determine whether one is greater than, greater
than or equal to, less than, less than or equal to
the other.
If the condition is true, it will return non-zero
value, if the condition is false, it will return 0.
AAKASH KAUSHIK
9891983083,9289817971

12. RELATIONAL OPERATORS
AAKASH KAUSHIK
9891983083,9289817971

13. LOGICAL OPERATORS(AND,OR,NOT)
Logical operators are used in situation when
we have more then one condition in a single
statement.
The logical operators && and || are used when
evaluating two expressions to obtain a single
relational result.
The logical operator ! Is used for negation
purpose. Basically, it returns the opposite
Boolean value of evaluating its operand.
AAKASH KAUSHIK
9891983083,9289817971

14. LOGICAL OPERATORS
AAKASH KAUSHIK
9891983083,9289817971

15. TERNARY OPERATORS
THE ONE AND ONLY TERNARY
OPERATOR IS CONDTIONAL
OPERATOR( ? : )

16. CONDITIONAL OPERATOR
The conditional operator is also known as
ternary operator. It is called ternary operator
because it takes three arguments. First is
condition, second and third is value. The
conditional operator check the condition, if
condition is true, it will return second value, if
condition is false, it will return third value.
Syntax:-
val = condition ? val1 : val2;
AAKASH KAUSHIK
9891983083,9289817971

17. TERNARY OPERATOR USAGE
EXAMPLE
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int x=5,y=2,lrg;
lrg = (x>y) ? x : y;
cout<<"nlargest number is : "<<lrg;
getch();
}
Output : Largest number is : 5
AAKASH KAUSHIK
9891983083,9289817971

18. SOME MORE SPECIAL OPERATORS
SIZEOF & COMMA OPERATOR

19. SIZEOF OPERATOR
The sizeof is a compile time operator, and used
with an operand, it returns the number of bytes
the operand occupies. The operand may be a
variable, a constant or a data type qualifier.
m=sizeof(sum);
n=sizeof(long int);
k=sizeof(235L);
AAKASH KAUSHIK
9891983083,9289817971

20. COMMA OPERATOR(,)
The comma operator (,) is used to separate two
or more expressions that are included where
only one expression is expected. When the set of
expressions has to be evaluated for a value, only
the right-most expression is considered.
For example, the following code:
a = (b=3, b+2);
would first assign the value 3 to b, and then
assign b+2 to variable a. So, at the end,
variable a would contain the value 5 while
variable b would contain AAKASH KAUSHIK
value 3.
9891983083,9289817971

21. THANK
YOU
AAKASH KAUSHIK
9891983083,9289817971