A segmentation fault typically occurs due to three main reasons. First, it can be caused by accessing memory that “does not belong to you.” This is a common issue in languages like C and C++, where the programmer has direct access to memory via pointers. Second, it’s often triggered when trying to write read-only memory. Lastly, null pointers also cause segmentation faults when programs attempt to use them as if they were fully-fledged pointers. These issues are usually detected during runtime, causing the program to terminate abruptly.
