I am doing numerical simulation under Red Hat Linux9.0 , but I met error sometime, and " Segmentation fault" is printed to the screen and the program stopped, I do not know why this happens, Help needed.

Thanks in advance!

A segmentation fault generally points to a memory address error - usually caused by overrunning an array, in my experience. Try compiling with a -C option (for most compilers this enables array boundary checking) and see if it gives you any information when the program crashes.

Yes u r right? It happens to me when I forget to deallocate the arrays at the end of the program.(after allocating them at some point in the program). Hope it helps Bye

Just compile ur code using -g option eg $gcc -lm -g test.c

and then do $gdb a.out $gdb run

Mostly program will crash, then type $gdb where

It will show u the location of problem in ur code.

Regards Sandip Jadhav

-- http://www.aero.iitb.ac.in/userpages/sandipj