Program Development

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The program development process consists of a number of stages some of which may have to be repeated several times until the end product is correct:

1.: Designing the program and writing the source-code text.
2.: Keying in the text to produce a set of Fortran source files.
3.: Compiling the source code to produce a set of object modules.
4.: Linking the object modules and any object libraries into a complete executable image.
5.: Running the executable program on some test data and checking the results.

The main parts of the process are shown in the diagram below.

**Figure:** Compiling and Linking
$\begin{figure} \setlength {\unitlength}{1mm} \begin{center} \begin{picture} (... ...-2){10}} \put(55,120){\vector(0,-2){10}}\end{picture} \end{center} \end{figure}$

Helen Rowlands
8/27/1998