C# Primitive Types and Variables | Datatype Literals and Variables | C# Tutorial | Simplilearn

Summary

Pepper Khandelwal introduces C# primitive types and variables in a Simply Learn YouTube session. The tutorial covers variable concepts, types (primitive and reference), and details on signed, unsigned, and floating-point data types. It concludes with a practical implementation, demonstrating how to declare and use these variables in C#, including examples for integers, floating points, characters, booleans, and strings.

Takeaways

• 😀 The video introduces C# primitive types and variables.
• 🔔 The presenter encourages viewers to subscribe for daily tech updates.
• 💾 Variables in C# are storage locations with a specific type that determines memory size and operations.
• 📈 There are two types of variables in C#: primitive and reference/object.
• 🔢 Primitive types include numbers and boolean values, with numbers further divided into signed and unsigned.
• 👍 Signed data types like sbyte, short, int, and long have negative to positive value ranges.
• 🚫 Unsigned data types like byte, ushort, uint, and ulong can only store non-negative values.
• 🔄 Floating-point types (float, double, decimal) store approximate values with different precision levels.
• 📝 The char type stores Unicode characters, and the bool type stores true or false values.
• 📑 The string type, although not a primitive type in some languages, is considered a primitive type in C#.
• 💻 Practical examples are given for declaring and printing different types of variables in C#.

Q & A

What is the primary purpose of a variable in programming?

A variable is a named storage location that programs can access, and it has a type that governs its memory size, layout, and the operations that can be applied to it.

What are the two types of variables in C#?

There are two types of variables in C#: primitive type variables and reference or object variables.

What is a primitive data type?

Primitive data types are the basic data types built into the language, which can be further divided into numbers and boolean values.

What is the value range of a signed byte in C#?

The value range of a signed byte in C# is from -128 to 127.

What is the value range of an unsigned integer (uint) in C#?

The value range of an unsigned integer (uint) in C# is from 0 to 4 billion.

How do you define a floating-point variable in C#?

Floating-point variables in C# are defined with a specific suffix: 'f' for float, 'd' for double, and 'm' for decimal.

What is the difference between signed and unsigned data types?

Signed data types can store both positive and negative values, while unsigned data types can only store positive values.

What is the purpose of the 'bool' data type in C#?

The 'bool' data type in C# is used to store Boolean values which are 'true' or 'false', commonly used in conditional statements.

How does C# handle string data types differently from other primitive types?

In C#, strings are considered a reference type, unlike other primitive types, and they can contain a word or a sentence.

What is the significance of the 'char' data type in C#?

The 'char' data type in C# is used to store a single Unicode character.

How can you toggle the value of a Boolean variable in C#?

You can toggle the value of a Boolean variable in C# by using the '!' operator to change 'true' to 'false' or vice versa.

Outlines

00:00

💻 Introduction to C# Primitive Types and Variables

Pepper Khandelwal introduces the topic of C# primitive types and variables on the Simply Learn YouTube channel. The video promises daily updates on various technologies and encourages viewers to subscribe and enable notifications to stay updated. The session's agenda includes an introduction to variables, types of variables, detailed discussion on primitive types, and an implementation example in C#. A variable is explained as a named storage location in C programming, with its type determining memory size, value range, and applicable operations. The system reserves memory when a variable is declared. The video will focus on primitive variables, with a brief mention of strings from object-based variables.

05:00

🔢 Understanding Primitive Variables in C#

The video delves into primitive types, which are built-in data types in C#. These are further divided into numbers and boolean values. Number types are categorized into signed and unsigned types. Signed types include sbyte (-128 to 127), short (-32k to +32k), int (-2 billion to +2 billion), and long (large values). Unsigned types only store positive values and include byte (0 to 255), ushort (0 to 65,000), uint (0 to 4 billion), and ulong (large values). The video also covers floating-point types like float, double, and decimal, which store approximate values and are differentiated by precision. Other types discussed are char for Unicode characters, bool for true/false values, and the honorary primitive type, string, which can contain words or sentences.

10:01

📝 Implementing C# Variables in Code

The script demonstrates how to declare and use different types of signed and unsigned integer variables in C# code. Examples include sbyte (-120), short (30,000), int (2 billion), and long (a larger number) for signed types, and byte (122), ushort (60,123), uint (400 million), and ulong (a large number) for unsigned types. The video shows how to print these values using Console.WriteLine in C#. The aim is to provide practical examples to help viewers understand how variables work in C# programming.

15:04

📉 Exploring Floating Point and Other Data Types

The video continues with an exploration of floating-point types, showing how to declare and print float (12.7), double (23.67), and decimal (99.1079) values in C#. It emphasizes the importance of using 'f' for float and 'm' for decimal in variable assignments. The video also covers boolean and string data types, demonstrating how to assign and print a boolean value (true) and a string ('Welcome to Simply Learn'). The script includes a practical example of toggling a boolean value from true to false by using the '!' operator. The session concludes with a call to action for viewers to like, share, and subscribe to the Simply Learn YouTube channel for more informative content.

Keywords

💡C#

C# is a modern, object-oriented programming language developed by Microsoft. It is used to create a variety of applications, from web applications to games and enterprise software. In the video, C# is the main programming language discussed, with a focus on its primitive types and variables, which are fundamental to understanding C# programming.

💡Primitive Types

Primitive types refer to the basic data types that are built into the C# language. These include integers, floating-point numbers, characters, and booleans. The video script explains various primitive types, such as signed and unsigned integers, and how they are used to define the range of values a variable can hold.

💡Variables

A variable in programming is a storage location paired with an associated symbolic name, which contains some known or unknown quantity of information referred to as a value. In the context of the video, variables are introduced as a way to store data in C#, with different types of variables being discussed.

💡Signed Data Types

Signed data types are used to represent both positive and negative values in programming. The video script provides examples of signed data types in C#, such as signed byte, short, int, and long, each with a specific range of values they can represent.

💡Unsigned Data Types

Unsigned data types can only represent non-negative values. The video explains unsigned data types like byte, unsigned short, unsigned int, and ulong, emphasizing their use for values that do not require a negative range.

💡Floating Point Types

Floating point types are used to represent real numbers in a computer program. The video discusses three floating point types in C#: float, double, and decimal. These types are used when dealing with approximate values, and the video provides examples of how to declare and use them.

💡Boolean

Boolean is a primitive data type in C# that has only two possible values: true and false. It is used for conditional statements to perform actions based on whether a condition is true or false. The video script demonstrates how to declare and use a boolean variable.

💡String

A string is a sequence of characters used to represent text. Although not a primitive type in some languages, C# treats strings as a primitive type. The video script shows how to declare and manipulate string variables, which are used to handle textual data.

💡Data Type Matching

Data type matching refers to the practice of ensuring that the data type of a variable matches the data type of the value it is intended to store. The video emphasizes the importance of matching data types to avoid errors and ensure that the correct amount of memory is allocated for each variable.

💡Memory Allocation

Memory allocation in programming is the process of reserving a certain amount of memory for a variable when it is declared. The video script explains that when a variable is declared in C#, the system reserves a piece of memory equal to the size of the variable's data type.

💡Console.WriteLine

Console.WriteLine is a method used in C# to output data to the console. The video script includes examples of using Console.WriteLine to print the values of variables, demonstrating how to display the results of programming operations in the console.

Highlights

Introduction to C# primitive types and variables

Daily updates on multiple technologies

Subscription and notification recommendations for tech enthusiasts

Agenda for the session: variables, types of variables, primitive types, and implementation

Definition of a variable in C programming

Variable type governs memory size, layout, and operations

Memory allocation upon variable declaration

Two types of variables in C#: primitive and reference/object

Focus on primitive variables and discussion of strings from object-based variables

Explanation of primitive data types

Differentiation of signed and unsigned data types

Value ranges for signed byte, short, int, and long data types

Value ranges for unsigned byte, short, int, and long data types

Floating point types: float, double, and decimal

Precision and value differentiation of floating point types

Introduction to char and boolean data types

String as an honorary primitive type in C#

Implementation example of signed integer types in C#

Implementation example of unsigned integer types in C#

Implementation example of floating point types in C#

Implementation example of char, boolean, and string types in C#

Toggle boolean value demonstration

Conclusion and call to action for likes, shares, and subscriptions

Transcripts

hey everyone i am pepper khandelwal and

i welcome you all to our simply launch

youtube channel today we will talk about

one of the interesting topics that are c

sharp primitive types and variables

but before we begin let me tell you guys

we have daily updates on multiple

technologies so if you are a tech geek

in a continuous hunt for a latest

technological advancements then consider

getting subscribed to our youtube

channel and don't forget to hit the bell

icon to never miss an update on simply

learn

now without any further ado let's get

started with the agenda for today's

session

we will begin a session with the

variable

then we will discuss the types of

variables

after that we will discuss the primitive

types of variables in detail

finally we will wind up this session

with an implementation on c sharp

variables

now let's get started with what a

variable is

a variable is simply the name provided

to a storage location that our programs

can access

in c programming each variable has a

type that governs the size and layout of

the variable's memory the range of

values that can be stored inside that

memory and a set of operations that can

be applied to that variable

each variable data type must match the

data type of the value stored in that

variable

when we declare a variable the system

reserves a piece of memory equal to the

variable size

now let's have a look at the types of

variables

there are two types of variables in c

sharp

first primitive type variables and

reference or object variables

in this session we will focus on

primitive variables and we will only

discuss strings from the object-based

variables

now let's discuss them in detail

first are primitive types

the data types which are built in the

main function are called primitive data

type

penetrated data types can be further

divided into numbers and truth

values the numbers are then divided into

signed and unsigned data type

let's have a look at them in detail

first up signed data type

we have tabulated the characteristics to

differentiate them we will start with

signed byte its value range tangles

between -128 to 127

then we have short

this one has a lot of memory space

and its value range is from -32k to

positive 32k

after this we have an int or integer

data type it is the most utilized data

type in any programming language

its value goes from -2 billion to

positive 2 billion

at last we have long data type

this can store an incredibly large value

variable

now let's have a look at unsigned data

type

unsigned data type can only store

positive values

we will start with a byte its value

range tangled between 0 to 255

then we have unsigned

short or u short this one has a lot of

memory space then byte

and its value range is from 0 to 65

grand

after this we have u end or unsigned

integer data type

its value goes from 0 to 4 billion

at last we have u long or unside long

data type

this can store an incredibly large value

variable and these were the integer base

private data types

now let's take a look at floating point

types

there are three types of floating point

type variables

float double and decimal

now floating points types are after a

point just an approximate value

now they are differentiated based on the

precision digits

now these fixing points may differ based

on how big or small a value is

now let's discuss a few more types of

data type

first up care

this one store characteristics which are

in theory unicodes essentially a number

next up boolean this variable stores

truth and false values

these are usually used in conditional

statements

next up is an honorary primitive type

which is string usually a string is not

considered a permitted type but in c

sharp it is not the case

string can contain a word or a sentence

now let's try these variables in a

correlator

let's start with signed integer types

first up s byte

let this variable be sb

and equals to negative

120. next up short

as

is equals to

30 000.

and

i

should be equals to

let's take a big number so

around

2 billion

next up

we have

long

l

equals to

let's check

a bigger number than the two billion

now let's try to print them

so we can use console

dot

write line

sb

and then

s

then we have

i

then we have l

let's save them

and

print it

as you can see it is printing minus 120

for the s byte

and thirty thousand for short two

billion for integer and a big number for

long

now

let's try some different types of

integers

let's use unsigned integers

inside integer

types

now we will have byte

a

b

is equals to

122

then we will have

u short

us

is equals to

let's say

60123

next we have cue it

ui

is equals to

since we can go

up to 4 billion

so

let's take 400 million

then we have

u long

ur

is equals to

we can give it

a big number

now let's try and print them

we can copy these

and change the variable names

this is

b this is us

this is ui

this is your

and let's save them

let's comment them as well

to avoid confusion

now let's save and run them again

as you can see now they are printing the

byte byte u short u n

and u long

now

let's comment everything

now let's discuss the floating point

types

let's start with the float

let's take value as 12.7

now you have to remember when defining a

float we need to give f as its

at last character in its value

then we have double

d

is equals to

let's say 23.67

then we have decimal

dm is equals to

99.1079

now this also should end with an m

now let's try to print them

this one should be f

the next one should be d

then dn

let's save them and run them again

now as you can see it is printing the

float value without an f

then a double value then a decimal value

without them

now

let's try

the boolean character and string values

let's start within care

care c

is equals to

t

another a boolean

flag

and let's give it value as true

let's also have a string

str

is equals to

welcome

to

simply learn

now let's try to print them

this time

let's change the variable to c

then

flag

then we have str

now let's save them

and run them again

now as you can notice that for the

character it is printing the same as it

is character

then the flag is it is printing true

and for the string it is printing

welcome to simpler

we can also change

the flag

from true to false by just adding an

exclamation point behind the number so

let's save

and run it

and now you can see it is toggling

between false

now let's get back to our slides

and this was all for today's session

hope you guys found it informative and

helpful if you liked this session then

like share and subscribe if you have any

question then you can drop them in the

comment section below thanks for

watching and stay tuned for more from

simply learn

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