The document discusses the basics of web programming using ASP.NET. It defines key concepts such as character set, tokens, keywords, identifiers, literals, punctuators, operators, data types and variables. Character set refers to the set of valid characters a language can recognize like letters, digits and symbols. The smallest individual unit in a program is called a token which can be keywords, identifiers, literals, operators or punctuators. Keywords are reserved words, identifiers name parts of a program, literals are constants, operators perform computations and punctuators separate tokens. Data types declare the type of variables which are used to store information.

1. Prof. Neeraj Bhargava
Pramod Singh Rathore
Department of Computer Science
School of Engineering & System Sciences,
MDS University Ajmer, Rajasthan, India
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Basics of Web Programming using
ASP.NET

2. Session Objectives
 Character Set
 Token –
 Keyword
 Identifier
 Literals
 Punctuators
 Operators
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3. Character Set
 It is a set of valid characters that a language can
recognize
 A character represent any letter, digit etc
 Eg :
 Letters A-Z, a-z
 Digit 0-9
 Special symbol: +,-,?,*
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4. Token
 Smallest individual unit is a program is known as token
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5. Token
 Keyword
 Are reserved word in a program
 E.g. for, if-else, void , main etc
 Identifiers
 Names given to different parts of the program like for variables
, objects, classes, function , array, etc
 Valid identifier : MyFile, _Rollno
 Invalid identifier : 3Myfile, my.file
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6. Token
 Literals
 Or constant which never change their value during the program
run
 Integer Constant : 7,100,9
 Character Constant : ‘c’ , ’d’
 Real Constant : 7.0 ,8.9
 String Constant : “psr”
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7. Token
 Operators
 Do some computation when applied to variables
 Eg : a=c+d
 Airthematic operator : + , - , / ,%
 Logical Operator : &&, ||
 Assignment Operator : =, <= , >=
 Relational Operator : < , >
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8. Data Types and Variable
 Variable are used to store piece of information
 Student _Name
 Data types are used to declare the type of variable
 int
 Float
 String
 Char
 bool
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9. Assignment 2
 Describe Character Set
 Explain Token with suitable example ?
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10. Queries ????
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