C Interview Questions and Answers


This program crashes before it even runs!

This program crashes before it even runs! (When single-stepping with a debugger,
it dies before the first statement in main.)

You probably have one or more very large (kilobyte or more) local arrays. Many systems
have fixed-size stacks, and even those which perform dynamic stack allocation automatically
(e.g. Unix) can be confused when the stack tries to grow by a huge chunk all at
once. It is often better to declare large arrays with static duration (unless of
course you need a fresh set with each recursive call, in which case you could dynamically
allocate them with malloc;

Other possibilities are that your program has been linked incorrectly (combining
object modules compiled with different compilation options, or using improper dynamic
libraries), or that run-time dynamic library linking is failing for some reason,
or that you have somehow misdeclared main.

Posted by:Richards