Summary Lecture 1: Intro to Programming & Flowcharts
2 keer bekeken 0 keer verkocht
Vak
DSA 312
Instelling
Data Structures And Algorithms
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 an...
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.
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, creditcard of Stuvia-tegoed voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper feonsunny. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €5,33. Je zit daarna nergens aan vast.
