The document outlines the distinctions between constants and literals in programming, explaining the rules for various types of integer and floating-point literals in languages like C++. It provides examples of legal and illegal formats, including how to denote bases for integers and the appropriate structure for floating-point numbers. Additionally, it introduces standard C++ keywords related to boolean values and character escape sequences.

2. •Constants are expressions with fixed
values while literals are used to
express a particular value within the
source code of a program.
Example: number = 5
This example is a literal constant

3. 1. Integer Literals
2. Floating point Literals
3. Boolean Literals
4. Character Literals

4. It may be in decimal, octal, or hexadecimal constant.
To specify the base or radix; Ox or OX for
hexadecimal, O for octal, and none for decimal. Also,
integer literals can have a suffix of U and L for
unsigned and long integer. The suffix can be written
in uppercase or lowercase and in any order.

5. • 312 //legal
• 212u //legal
• Oxace //legal
• O79 //illegal: 9 is not an octal number
• O42UU //illegal: suffix should not be
repeated

6. 1. 15
Answer: Legal
2. O18
Answer: Illegal,8 is not an octal number.
3. Ox38a
Answer: Legal
4. O33UU
Answer: Illegal, Suffix should not be repeated.
5. O24
Answer: Legal

7. • 75 //decimal
• O712 //octal
• Ox5C //hexadecimal
• 2O //int
• 2Ou //unsigned int
• 2Ol //long
• 2Oul //unsigned long

8. 1. 15
Answer: Decimal
2. O335
Answer: Octal
3. Ox38a
Answer: Hexadecimal
4. 9Ol
Answer: Long int
5. 9Ou
Answer: Unsigned int

9. • It is composed of an integer, a decimal point, a fraction.
And an exponent. It can be represented either in decimal
form or exponential form.
• Floating point in a decimal form should have a decimal
point and exponent, while in the exponential form, you
should include the integer part, the fractional part, or
both. The signed exponent is written as e or E.

10. • 3.1416 //legal
• 314159E-5 //legal
• 41OE //illegal: no exponent
• 31Of //illegal: no decimal or exponent
• .e33 //illegal: missing integer or fraction

11. 1. 10.125
Answer: Legal
2. 5E-3
Answer: Legal
3. 123E
Answer: illegal, no exponent
4. 0.E879
Answer: illegal, missing integer or fraction
5. 105E-3
Answer: Legal

12. This are part of the standard keyword of C++.
•True value represents TRUE.
•False value represents FALSE.

13. It should be enclosed in single quotes. There
are characters in C++ that include a backslash
() that specifies a special meaning or function.

14. • character
• ’ ‘character
• ” “character
• ? ?character
• a Alert or bell
• b Backspace
• f Form Feed

15. • n New line
• r Carriage return
• t Horizontal tab
• v Vertical tab
• ooo Octal number of one to three
digits
• xhh Hexadecimal no. of 1 or more
digits

16. #include <iostream>
Using namespace std;
Int main () {
cout<<“LovetProgrammingnn”;
return 0;
}

17. Love Programming