what is for loop in c | looping statements in c - types of loop in c

 hi everyone welcome to coding idea

Why do we use looping statement in C?

 this is fin woz

so today we are going to discuss about
for loop in C language so this is one
loop control statement how it executes
so what is the syntax and execution flow
some of the examples we'll see in this
video right for loop so generally what
is a loop user to execute a block of
instructions repeatedly iterations write
iteratively

a set of instructions we are executing
how many times as long as the given
condition is true right so for loop is
also used to execute a block of
instructions for is a keyword right all
are in a small case you have to write

what is the syntax syntax of for loop
here so we are writing initialization
statement so what is initialization like
I equals to 0 I equals to 5 right
initialization followed by condition we
need to write condition next one is
modified initialization statement
followed by the condition and modify
statement and here it is we are writing

the body so nothing but logic of a loop
we are writing statements inside so this
is simply for loop how it executes the
flow so first initialization statement
executes initialization after execution
of initialization statement it will go
and check the condition it will check
the condition

so after condition what will happen the
control move inside if condition is a
true the control move inside sir if
condition is a false then it will
terminate every loop terminates whenever
the condition has failed so here it is
if condition is a true

What are repetitive statements in C?

the control move inside and it will
execute the statements after execution
of these statements now it will go and
check the modify statement for so modify
means what increment and decrement
statements after modify once again it
will check the condition so this is five
sir if condition is true again then

again control move inside a statements
execute and then it will go and execute
modify and then it will check the
condition means the loop will repeat
here only as long as the condition is a
true it will execute initialization
statement execute only once after
execution of a condition the control
move inside directly okay now we will

see the flowchart flowchart off for loop
execution flow of a for loop here it is
flow start so first it will execute
initialization statement statements in a
parallelogram we are representing so
this is initialization statement
initialization after initialization so
now here it is it will go and check the
condition it will go and check condition

What are looping control statements in C?

sir if condition is a false then it will
terminate directly the control directly
come to end if condition is a true so
first it will execute it will execute
statements defined inside the block
statements after execution of statements
it will check it will go and modify
modify statement executes after

execution of modify statement again it
will go and check the condition once
again again if condition is a true same
process here only the loop will repeat
if condition has failed then the control
come out of that and it will move to
and okay so this is the flow right so
one simple example we'll see right how
write a program will execute right using
a for loop so one example on for loop

see main simple program just printing
printing one to 10 numbers using for
loop printing only just declare the
variable declare the variable and all
the three initialization statement one
to ten numbers I value initializing with
one initialization statement second one
condition and incrementing statement all
the three we are writing in a single

What is the use of continue statement in C language?

statement only and inside we are
printing the I value we are printing I
value this much so very easy of using
for loop here it is first I value starts
with one initialization and next control
command check the condition one is less
than or equals to ten condition true
come inside

it will print the I value I value 1 it
will printer after printing next it will
go and modify I plus plus I will you
become 2 after that here it is it will
check right 2 is less than or equal to
10 condition true up to 10 it will
repeat 10 times it will repeat whenever
I value become 11 11 is less than or

equals to 10 condition false it is a
simple program now we will see how to
find some of first n numbers using for
loop so program is sum of first n
numbers right so here so first we are
reading n value we are reading in value
so here I am declaring variable N and
here it is we are asking printf enter n
value enter n value next scanf we are
reading the N value we are reading n

value this consider n value is a 5
and value is five so now right I want to
so print only just some of first file
numbers only so we are repeating the
loop we are repeating the loop to repeat
the loop I variable is required I starts
with 1 how many times it is not 5 it is
n because n value varies that is depends
on the end user input it is not a 5
always here it is I is less than or
equal to n I plus place so here what we
have to do sorry n value equals to 5
then we need to find the value of 1 plus
2 Plus 3 plus 4 plus 5 sum of first five
numbers sum of first five numbers is our
program 1 plus 2 Plus 3 plus 4 plus 5 so

every time whenever we are adding the
numbers right where we are storing so
for that so declare one variable sum and
initializes with 0 so wiser we are
initializing with 0 it is the local
variable in C language if you are not
initializing any local variable that is
implicitly initializes with a garbage 

value so whenever we are adding the

what is for loop in c

values 1 2 3 4 5 so that will be added
to garbage value finally it will give
another garbage value so that creates a
problem for you that is why so here it
is sum equals to 0 right so now every
time I value is varying from 1 to 5 so
to the sum to the sum we are adding I
value and finally the result we are

storing into some result we are storing
into some this is so how this statement
executes very simple
suppose if I value 1 I value varies from
1 to 5 so first I am writing I value 1
to 5 1 to 5 and
initially some value is a zero sum value
zero so here some equals to sum equals
to sum plus I sum equals to sum plus I

so here it is so what is the sum value
every time just take some equals to
every time we are storing into some only
we are storing into some I value one two
three four five five now observe
initially what is the sum value 0 0 plus
1 will be stored into some so now what
is the sum value 1 sum value 1 next this
sum value will be stored here some value
is a 1 so 1 plus 2 the value will go and
stored into some what is it some value 3
next some value 3 3 plus 3 6 will go and

store into some so here it is some value
6 next 6 plus 4 the value will go and
store some value become 10 next 10 will
be substituted 10 plus 5 15 so final
value of sum is a 15 so like that the
logic will execute so now so finally how
we are printing very clearly printf sum
of first n number is nothing but Phi
numbers numbers is is percent is B here
it is N and some we are printing how it
executes sum of first n numbers n
numbers means what Phi numbers because

what is while loop in c

here user input is of 5 we considered
fine umbers is some value it will print
what is the sum value 15 so message will
be very clear at the end sum of first
five numbers is a 15
so this is simply how a for loop
executes right how to find a sum of
first n numbers using a for loop now we
will see right how to check a number is
a perfect number or not how to check a

number is a perfect number this is using
for loop once again now the concept is a
perfect number perfect number sir what
is the perfect number what is the
perfect number means sum of factors of a
given number except itself sum of
factors of given number except itself is
equals to the same number confusion just
see the example you will get clarity
suppose n value is 6 consider now we
need to find the factors of 6 we need to
find the factors of 6 here it is we are

checking with the I value I value V as
varies from 1 2 3 4 5 6 n is divisible
by 1 or not n is divisible by 2 or not 3
4 5 actually no need to check with
itself because except itself is there in
the definition so here it is n is
divisible by 1 or not right divisible
means reminder should be 0 so reminder
operator we are using n mod I equals to
0 or not yes next n mod 2 equals to 0 or

not yes n mod 3 equals to 0 or not yes n
mod 4 fail 5 fail so 1 is a factor 2 6 2
is a factor 2 6 3 is a factor 2 6 and of
course 6 is a factor 2 6 but no need to
check with itself so here it is just
combined 1 plus 2 plus 3 again the
result is a 6 it is equals to the N
some of factors of a given number is
equals to the same number is called a
perfect number so how to write the logic

types of loop in c

very simple observe how to write the
logic main I am declaring the variable n
because we need to read I and as usual
some we are taking zero sum now here we
are reading the N value how to read
using printf and scanf only enter n
value enter n value and here it is we
are scanning % is d address of en
address of n and next one here it is we
are checking for loop for loop from 1 to
less than itself we are checking every

number is a factor or not so I value
starts with 1 2 less than in not less
than or equals to because no need to
check with itself important i plus plus
i plus plus every time we are checking
if the n value is divisible by I are not
condition is a very clear if n value is
divisible by I or not if it is divisible
just add that I value to some add that I
value to some sum equals to some plus I
this is a program and here it is first I

value 1 1 is less than or equals to 6
condition true come inside 6 mod 1
equals to 0 s 1 is a factor so 1 will be
added to some some value initially 0
that will become 1 next I value become 2
2 is less than or equals to 6 come
inside 6 mod 2 equals to 0 s condition
true come inside that sum right 2
two is added to some so one plus two
three next I value three six mod three
equals to zero yes that will be added

next I value 4 right 6 mod 4 equals zero
fail next I value 5 6 mod Phi equals to
zero fail next I value 6 6 is less than
6 condition false it will terminate so
finally we are checking if the given
number is equals to sum then we can call
it as a perfect number perfect number
else else printf it's not perfect number
it is not perfect number this is example
how to check a number is a perfect
number or not means the perfect number

means the number right the sum of
factors of a given number is equals to
same number of course except itself so
how many factors we need to check using
one for loop less than itself because no
need to check with itself if it is a
factor yes we are finding the sum all
the factors sum we are finding finally
we are checking if the finding some is
equals to the N value then we can call
it as a perfect number that is it now

looping statements in c

you people just try how to write the
flow chart for perfect number how to
write the flow chart for perfect number
right in the next session we will see
some more examples on for loop okay for
more articel

control stement part 1