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Program design tips
Use industry-standard tools:
Use a C or C++ compiler adhering to the ANSI standard. If you are using the API under Windows, use Microsoft Visual C++ (version 6.0 or later).
If the program must run on both UNIX and Windows, use POSIX routines for system calls.
Use variables (instead of hard coding) for more flexibility and less maintenance:
Use symbolic constants (#define values from ar.h).
Use environment variables.
Use files to store menu or selection values instead of writing them into your program.
Minimize network traffic.
Use bulk transfer to retrieve data and to cache the information locally. Omit unnecessary fields when retrieving data.