hi guys my name is Ahmad Subhan Presenting you such an adorable presentation which give you People pretty much help nothi helping you about loops in FORTRAN programming pretty much helping to you i swear.....

1. 3/1/20181Presentation of Loops in Fortran

2. Group Members
Ahmad Subhan (06)
Safdar Tanver (12)
Izaz Ullah (31)
3/1/2018
2
Presentation of Loops in Fortran

3. LOOPS IN
FORTRAN
Presentation Topic
3/1/2018
3
Presentation of Loops in Fortran

4. Loop
3/1/2018Presentation of Loops in Fortran
4
What…..,
Why……,
When….,
Where…,
We use Loops in Fortran………………………………?

5. Loop
Type
Description
Do Loops This construct enables a statement, or a series of
statements, to be carried out iteratively, while a
given condition is true.
Do While
Loops
Repeats a statement or group of statements while a
given condition is true. It tests the condition before
executing the loop body.
Nested
Loops
You can use one or more loop construct inside any
other loop construct.
3/1/20185Presentation of Loops in Fortran

6. Do Loop
Syntax:
The general form of the do loop is:
Where,
the loop variable (var) should be an integer,
(start) is initial value,
(stop) is the final value,
(step) is the increment, if this is omitted, then the variable
(var) is increased by unity.
do var = start, stop [,step]
! statement(s)
…..…
end do
3/1/2018
6
Presentation of Loops in Fortran

7. Flow Chart of Do Loop
Start
Initialization
Condition
Code Block
Increment
End
TRUE
FALSE
3/1/2018
7
Presentation of Loops in Fortran

8. Code Snap Shot
program factorial
implicit none
integer :: n,nfact
! compute factorials
do n = 1, 10
nfact = nfact * n
! printing the value of n and
its factorial
print*, n , " factorial is= ",
nfact
end do
end program factorial
Example No 1
3/1/2018
8
Presentation of Loops in Fortran

9. Code Snap Shot
program printNum
implicit none
! define variables
integer :: n
do n = 11, 20
! printing the value of n
print*, n
end do
end program printNum
Example No 2
3/1/2018
9
Presentation of Loops in Fortran

10. Do-While Loop
It repeats a statement or a group of statements while
a given condition is true. It tests the condition before
executing the loop body.
Syntax:
do while (logical expr)
statements
end do
3/1/2018
10
Presentation of Loops in Fortran

11. Flow Chart of Do-While
3/1/2018
11
Presentation of Loops in Fortran

12. Code Snap Shot
program factorial
implicit none
! define variables
integer :: nfact = 1
integer :: n = 1
! compute factorials
do while (n <= 10)
nfact = nfact * n
n = n + 1
print*, n, " ", nfact
end do
end program factorial
Example No 3
3/1/2018
12
Presentation of Loops in Fortran

13. Nested
Loops
 You can use
one or more
loop construct
inside any
another loop
construct. You
can also put
labels on loops.
Syntax:
I loop: do i = 1, 3
print*, "i: ", i
J loop: do j = 1, 3
Print*, "j: ", j
K loop: do k = 1, 3
print*, "k: ", k
end do k loop
end do j loop
end do I loop
3/1/2018
13
Presentation of Loops in Fortran

14. Code
Snap Shot
program nestedLoop
implicit none
integer:: i, j, k
iloop: do i = 1, 3
jloop: do j = 1, 3
kloop: do k = 1, 3
print*, "(i, j, k): ", i, j, k
end do kloop
end do jloop
end do iloop
end program
nestedLoop
Example No 4
3/1/2018
14
Presentation of Loops in Fortran

15. References
 https://www.google.com.pk/search?q=loops&rlz=1C1EJFA_enAE698P
K699&oq=loops&aqs=chrome..69i57.2174j0j7&sourceid=chrome&ie=
UTF-8
 https://www.google.com.pk/search?q=do+loops&rlz=1C1EJFA_enAE6
98PK699&oq=do+loops&aqs=chrome..69i57.13846j0j9&sourceid=chr
ome&ie=UTF-8
 https://www.google.com.pk/search?q=nested+loop&rlz=1C1EJFA_en
AE698PK699&oq=nested+loop&aqs=chrome..69i57.6516j0j9&sourcei
d=chrome&ie=UTF-8
 https://www.google.com.pk/search?q=flowchart+fortran+pdf&rlz=1C1
EJFA_enAE698PK699&oq=flow&aqs=chrome.1.69i57j69i59l2.6443j0j
9&sourceid=chrome&ie=UTF-8
 https://www.google.com.pk/search?q=do+while+loops&rlz=1C1EJFA_
enAE698PK699&oq=do+while+loops&aqs=chrome..69i57.12782j0j9&
sourceid=chrome&ie=UTF-8
3/1/2018
15
Presentation of Loops in Fortran

16. 3/1/201816Presentation of Loops in Fortran

17. 3/1/201817Presentation of Loops in Fortran