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C++ Basics in One shot - Strivers A2Z DSA Course - L1
take U forward
This is a full-fledged interview preparation website that I run on my end so if you 're
someone who has three months to like six months of time left for interviews I will
definitely ask you how to check this Strivers SD sheet
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You should definitely check out coding ninjas because web development
okay data Stitch algorithm foreign County there 's a link in the description make sure
you check them out I 'll be using vs code in order to code I'll be writing my C plus
plus code over here and whatever the code generates as an output will be produced
over here
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C plus plus we can use the
hash include so hash include i o stream imagine if you want to use something like a
math dot h I 'll be talking about radical functions afterwards
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Program always uses STD for all the functions for most of the functions you have to
write STD double colon double Corner
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It's going to take you a lot of time
this is where C plus plus C is a I 've got something better for you I say can I write
bits STD C plus Plus C plusplus C
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plus plus
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We will be specifically using two data types float and
double again they have ranges depending on the Range that you use you 'll be
using float or double the ranges are visible on the screen
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If we use something like get line inside the get line you have to write CN what is get
line again do not need to dig deep it's an internal function
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Character can store all of the 256
characters in English dictionary
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If you are greater than equal to
18 then I can say you are an adult you're an adult yes or if you are lesser than 18 E1
not an adult
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The problem is very simple school has following rules for grading system below 25
grade f 25 to 44 grade e 45 to 40 49 ready and so on so your task is to ask user to
enter marks and print the corresponding grade okay so what is the first reading get
the marks
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If 24 is true over
here none of these lines will be executed because it states else it will never go there
and it will not be executed so you 'll be saving a lot of time previously in every F was
executed so this is why else if will be written now another thing you 're having 24
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If the
age is smaller than 18 you can print this and all the conditions are given to you so
something we know uh for sure is we need age right so we can take the scene of H
now we know something if H is uh smaller than H then we got ta print something like
not eligible per job
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But if it is between 55 and 57 eligible for the job but retirement soon that is what you
have to print got it right
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This is one of the most
followed resources in the country as of now what does this resource gives you it
gives you 119 well curated problems such that all your DS algo Concepts will be
covered
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In the next video we will be covering Java 1
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C out is a function which
exists under the STD and double colon so in order to use C out you have to write
STD
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If you compile it prints everything now it
looks a easier task is n't it so this is how you can easily write okay now let 's quickly
have an input imagine you want to take an input
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It includes all the libraries everything whatever
libraries are there in C plus
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everything is included under this bits slash
stdc pluscplus plus dot h
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If you want to store bigger
numbers than this this is where something like long long will come in so if you are
saying long long it will give you a wider range
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The moment you click
enter the next line will not be picked up so it just picks up till the line break so string
and get line is used to take any of the string
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If we have something like a 10 and that 10 can be
stored in all the three or all the five why ca n't we use simply long long or maybe
double? Everything takes up a certain space in your computer so depending on that
we decide what to use now integer has a range now those numbers you can't uh
remember so what I usually do is I keep a rounding of number like I know integer will
be from minus 10 to the power 9 to 10 to power 9
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If you omit the else statement what will happen is the 15 will be taken
as the input and the if will not be executed and will not find an else
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Backslash asterisk is how you can do it a single line
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marks is going and checking this set imagine the marks are something like 86
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If it is greater than equal to 18 you will be printing eligible for job
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