How to resolve the algorithm Environment variables step by step in the Fortran programming language

Published on 12 May 2024 09:40 PM
#Fortran

How to resolve the algorithm Environment variables step by step in the Fortran programming language

Table of Contents

Problem Statement

Show how to get one of your process's environment variables. The available variables vary by system;   some of the common ones available on Unix include:

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Environment variables step by step in the Fortran programming language

Source code in the fortran programming language

program show_home
implicit none
character(len=32) :: home_val  ! The string value of the variable HOME
integer           :: home_len  ! The actual length of the value
integer           :: stat      ! The status of the value:
                               !  0 = ok
                               !  1 = variable does not exist
                               ! -1 = variable is not long enought to hold the result
call get_environment_variable('HOME', home_val, home_len, stat)
if (stat == 0) then
    write(*,'(a)') 'HOME = '//trim(home_val)
else
    write(*,'(a)') 'No HOME to go to!'
end if
end program show_home

You may also check:How to resolve the algorithm Rare numbers step by step in the Visual Basic .NET programming language
You may also check:How to resolve the algorithm Sort an array of composite structures step by step in the Elixir programming language
You may also check:How to resolve the algorithm Strip block comments step by step in the jq programming language
You may also check:How to resolve the algorithm Reflection/List methods step by step in the PHP programming language
You may also check:How to resolve the algorithm Compiler/syntax analyzer step by step in the AWK programming language