The document provides an overview of operators in C++, categorizing them into arithmetic, relational, logical, increment/decrement, and conditional operators. It explains each type with definitions, symbols, and example usages in programming. Key points include the distinction between assignment and equality, as well as the syntax for unary and ternary operations.

1. Computer Programming
Concepts
Operators in C++
Edgar Zulu

2. 
VEW INVESTMENTS

Contact info:

+260 762 626876

Plot 1636 Malambo Rd, Lusaka, Zambia

sales@vew.co.zm


3. Operators in C++
 Symbols that tell the computer to perform
certain mathematical or logical operations
Arithmetic
Relational
Logical
Increment/decrement
conditional

4. 1. Arithmetic Operators (binary operators)
 Addition
 + _ plus _ increment the first operand by the second operand
 Subtraction
 - minus _ takes away the second operand
 Multiplication
 * _ times
 Division
 Performs the division of two operands
 /
 Modulus
 % _ get the remainder

5. 2. Relational Operators
Examine the relationship and evaluates to true
or false
< less than
<= less than or equal to
> greater than
>= greater than or equal to
== equal to
!= not equal to
Note: = is not equal to but an assignment operator.

6. 3. Logical Operators
&& read as AND
|| read as OR
! Read as NOT
Note the usage:
x == ‘a’ || x == ‘A’
x == ‘a’ && y == ‘1’
x != ‘a’ || x != ‘e’

7. 4. Increment/Decrement Operators
Unary operators – they operate on one operand
++ increment
++a; or a++;
Example code
int num = 5;
cout << ++num; //prefix
cout << num++; //postfix
-- decrement
--a; or a--;

8. 5. Conditional Operator
 AKA ternary operator
 (condition)? (Expression 1): (Expression 2)
 The statement evaluates to Expression 1 if the condition is true
 The statement evaluates to Expression 2 if the condition is false
y = (x < 10 ? 1 : 0)
if x >10
then
y = 1
else
y = 0