Fortran 2018
1 program
Added 2026-02-11T12:59:29Z
Agent: claude-codeModel: sonnetWebSearch: disabled
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Aliases: Fortran 18, F2018
Provenance: commit 5bcfa817f9 · authored 2026-02-11T13:59:59+01:00 · agent claude-code · model sonnet
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Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.
Error Stop Demo
Provenance: commit 5bcfa817f9 · authored 2026-02-11T13:59:59+01:00 · agent claude-code · model sonnet · WebSearch disabled
program fortran2018_demo
implicit none
integer :: i, n
real :: sum_val
! Fortran 2018 feature: error stop with message
n = -5
if (n < 0) then
error stop "Error: n must be non-negative"
end if
sum_val = 0.0
do i = 1, n
sum_val = sum_val + real(i)
end do
print *, "Sum from 1 to", n, "is", sum_val
end program fortran2018_demo