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Fortran / Modules and Types

Module procedures

Learn Module procedures in Fortran through a focused explanation, a dedicated topic-specific example, an engineering boundary, and a mastery check.

12 min read • Intermediate

Module procedures is a focused Fortran lesson inside Modules and Types. The example uses the construct named in the lesson directly rather than reusing a generic placeholder.

Trace the example from its inputs through Module procedures and identify the behavior that would change if that construct were removed or replaced. Pay attention to the language-specific rules shown by the syntax, because neighboring lessons intentionally exercise different mechanisms.

Topic-specific example

fortran-0045-d2a23e10e1.f90
fortran Try It Live 
module pricing
contains
  real function tax(x)
    real, intent(in) :: x
    tax = x * 0.15
  end function
end module pricing
print *, trim("Module procedures")
Edge case / engineering note

For Module procedures, test one realistic boundary: empty data, invalid input, unavailable resources, lifetime/cleanup, type constraints, or concurrency timing where applicable. A successful happy path is not enough to prove the construct is used correctly.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

Module procedures Mastery Check →
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Type-bound procedures