Often when I use string in my program it shows no error during compilation but at runtime it shows segmentation fault (core dumped). When there is still no error why doesn't it work? (I do it in linux environment (ubuntoo))
Find a way to reliably reproduce the problem. If there's no debugger,
put printing out some marks like printf("m1\n"); at suspicious places
(m1, m2, m3...) into your program. This way you can encircle the
point where something's going wrong.
Another method is reduction. Make a copy of the whole project
so that you are free to delete parts or comment them out. The last
section of the program that was removed so that the error
vanishes most like contains a clue.
Go through the source code with another person and explain
what you are doing. It often happens that while one is doing
this the cause of the problem catches one's eyes, your eyes.
Regards,
Joachim
It seems you're trying to use memory space which is not already allocated. It happens that it's too complicated to find which instruction leads to this type of error. If you're in this case, I might advice you to use a debugger like GDB. It's easy to use it if it's integrated to a IDE (like Eclipse CDT).
Adding a point to above answers, it could be the case when you try to access the address (instruction pointer) of an instruction which is out of scope or not an valid address having instruction .
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