Fortran Hello World!
Fortran Hello World!
Click on RUN button to see the output
Fortran Online Compiler
Write, Run & Share Fortran code online using OneCompiler's Fortran online compiler for free. It's one of the robust, feature-rich online compilers for Fortran language, running on the latest version 7. Getting started with the OneCompiler's Fortran compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as
Fortran. OneCompiler also has reference programs, where you can look for the sample programs and start learning. Happy learning!!
Read inputs from stdin
OneCompiler's Fortran online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample Fortran program which takes name as input and prints hello message with your name.
program hello character :: name*30 read *, name print *, "Hello ", name end program hello
Fortran language was initially developed for scientific calculations by IBM in 1957. It has a number of in-built functions to perform mathematical calculations and is ideal for applications which has more mathematical calculations.
|Integer||To store integer variables||integer :: x|
|Real||To store float values||real :: x|
|Complex||To store complex numbers||complex :: x,y|
|Logical||To store boolean values True or false||logical :: x=.True. , logical :: x = .FALSE.|
|Character||To store characters and strings||character :: x|
Variable is a name given to the storage area in order to manipulate them in our programs.
data type :: variable_name
Array is a collection of similar data which is stored in continuous memory addresses.
data-type, dimension (x,y) :: array-name
integer, dimension(3,3) :: cube
Do is used to execute a set of statement(s) iteratively when a given condition is true and the loop variable must be an integer.
do i = start, stop [,step] ! code end do
Do-While is used to execute a set of statement(s) iteratively when a given condition is true.
do while (condition) !Code end do
If is used to execute a set of statements based on a condition.
if (logical-expression) then !Code end if
If is used to execute a set of statements based on a condition and execute another set of statements present in else block if condition specified in If block fails.
if (logical-expression) then !code when the condition is true else !code when the condition fails end if
Case is similar to switch in C language.
[name:] select case (regular-expression) case (value1) ! code for value 1 ... case (value2) ! code for value 2 ... case default ! default code ... end select [name]
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