Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

Topic- Write Your First Program in C++
CodeHelp - by saumya jain
This is the 2nd lecture of our DSA series
...
This is how
the compilation process work So it is
compiler which makes it possible for us to
run a source code
...
Courses are available in both
Hindi and English
...
There are many
IDEs out there - CodeBlocks, VsCode and
many more - which you don't even need to
install Replit is one of them
...
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
...
If you will
use>> by mistake by mistake, then it will

give you compilation error So we use this
operator to display output
...
Whenever you have to story any
information or data in the memory
...
For eg·- int a = 5, a
is a variable in memory which is of int type
and it has value 5 in it
...
There is a function named
sizeof, which will tell you about the space
being used by any variable
...
We have a
way to story multiple characters but we will
see that in upcoming lectures
...
We will just store binary form of
ASCII value of any character
...
This
process of converting one data type into
another is known as type casting
...
Let's say
the number is -5 1st - Ignore the negative
sign 2nd - Convert into binary
representation= 101 3rd - Take 2 's
complement and store it Now we can store
negative numbers simply too, by just using
their first bit as their sign
...
2/5 will give 0 and not 0
...
To get answer in
float, store it in a float variable
...

logical operators have & & and & is used to
check multiple conditions
...
We know what

check multiple conditions
...
We know what
things to keep in mind while dividing , how to
store negative numbers & & operators and !
operators

---