Numerical Modelling in Fortran: day 2
Numerical Modelling in Fortran: day 2
Numerical Modelling in Fortran: day 2
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functions and subrout<strong>in</strong>es<br />
• Useful for perform<strong>in</strong>g tasks that are<br />
performed more than once <strong>in</strong> a program<br />
and/or<br />
• Modularis<strong>in</strong>g (splitt<strong>in</strong>g up <strong>in</strong>to logical<br />
chunks) the code to make it more<br />
understandable<br />
• A function returns a value, a subrout<strong>in</strong>e<br />
doesn’t (except through chang<strong>in</strong>g its<br />
arguments)
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