Newcomer and a few questions

[certik]

@GeOdys, welcome to the forum!

@GeOdys

Is there any explanation for the space before the Hello World?

Yes:

Why does `print` output a leading space?

The following program: print *, "OK" end prints: $ gfortran a.f90 && ./a.out OK Notice the leading space. What is the motivation behind this? I found this link: fortran - How to remove leading space when printing with write? - Stack Overflow which says: In list-directed format (the * in write(unit,*)) the compiler typically inserts a leading space. The first column used to be used to control line printers but that is now deleted from Fortran. Wouldn’t it be more natural to change prin…

The LFortran compiler does not print it, unless you ask for it:

$ cat a.f90
program help
print *, "Hello World!"
end program
$ lfortran a.f90
Hello World!
$ lfortran --print-leading-space a.f90
 Hello World!