Class notes
Complete C++ Placement DSA Course
- Course
- Institution
Complete C++ Placement DSA Course
[Show more]
Seller
Follow
jdreams
Content preview
Complete C++ Placement DSA CourseLecture 1: Intro to Programming &
Flowcharts
We will learn about flow charts, pseudocode and programming languages.
We will also learn about programming languages and why do we use them.
After this, we will write our program. This will be our flow whenever we will
solve any problem. First question, then given values, then approach and at last
we will code it. Bhaiya explains what is a flowchart is a diagramatic approach of
that approach known as flow chart. The flow chart constitute various
components, connected with each other Bhaiyan says. He says that from where
a program is starting we have a component called terminator. Terminator is
used to show the start and end start of the program. Next block is a simple
rectangle, which shows a process. Bhaiya explains how to make a flowchart for
the sum of 2 numbers. He says the pseudocode as a whole is a generic way of
representing logic. The flow of a flow chart is the same as the flow of the
components of the flow chart. We use parallelogram to show the input/output of
the program.
We want to make a flowchart for calculating simple interest This is the
formula for simple interest You must have studied it in your school We
started our program from this start block I do n't know p , r , t , so I need
to take them as inputs first So I asked user to give me the values for p, r
and t So now I have P , R and T So I made this rectangular block for the
calculation part Here I wrote this formula After finding this answer in the
above calculation , I have to print the output too So here I will print
output with this block print SI and then we will end this program We
started the program , took a , b as input then we checked whether a is
less than b or not. If a < b print `` YES '' else print `` NO '' and its done
Simple You just have to write in english what you are thinking and it is
called pseudocode. If any number has 2 as its factor , then it is even
number or ODD number. We have to check a condition that whether N is
ODD or EVEN , so we will make one block for this condition Here is the
decision making block , Is N % 2 = 0 ? We will get 2 outputs , YES or NO If
output is YES, then it is an EVEN number , so I printed ODD Else, I will
print ODD Then I made this end block and ended this program something
like this This is the flowchart for EVEN , ODD Got it right ? Bhaiya, why
are you putting this inverting commas again and again , you will come to
know soon.
We have to print something and then increment too You have to Print and
then increase the printed number too You can see here , we printed and
then increased the numbe by 1 But we do n't know how to do it How we
will increase again and again Let 's rub it You know that we have to start
, from 1 and print till 5 So if I give you a number which starts from 1 to 5,
will it work ? Your are like , yes , this is what we needed So I took a
number =1 This is not a input , it is a process , so I wrote it inside
rectangular block. You have to print all the odd numbers from 1 to N as a
part of your homework. The catch is , 1 and N are inclusive here in the
answer should be 15. The solution is easy , you just have to use less than
equal to instead of less than. We know that we have to start with num=1
and increment it till N I know N = 5 , Num =1 , and sum =0 in the
beginning. Then I added number in the sum and incremented the number
by 1 and then again did the same thing over and over again In the
beginning , number is 1 , sum is 0 , then sum is 1 and number is 2 and
we kep on doing so , till number < =5 Now let 's try to solve it. You will
get your homework after this. Prime numbers are those numbers which
have only 2 factors , 1 and that number itself.
Flowchart shows how to add conditions, loops, input/output, processing,
processing and start/end. We also learnt how to write pseudocode and
how to talk about programming languages We will answer only 2
questions - What is it ? and why we use it? You will get your homework
questions too. We learnt about flowcharts in this lecture, pseudocode and
took an overview of programming languages. Next lecture will be out
tomorrow - most probably where we will be writing our first C++ program
- Namaste Duniya ( Hello world ) As a homework, you have to write
pseudocodes for all the questions we have solved today.
Lecture 2: Write Your First Program in
C++
This is the 2nd lecture of our DSA series. We will see how a
program runs and what does each line mean in this lecture. This
is how the compilation process work So it is compiler which
makes it possible for us to run a source code. Coding Ninjas has
supported us in providing this amazing DSA course to you.
Courses are available in both Hindi and English. you need an IDE
to write, run and execute a code. There are many IDEs out there -
CodeBlocks, VsCode and many more - which you do n't even need
to install Replit is one of them. You can directly create a C++
there and run it using Replit. In C++, many namespaces are
there which have cout functions in them so if we want to use cout
, we have to add this file to our code. We use these signs to
output the result into standard namespace. If you will use > > by
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller jdreams. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.39. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82191 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now