cpp segmentation fault mean code example

Example: segmentation fault means

## Segmentation Fault ##

when it will come ? READ Conditions below ...

- segmentation fault comes when you have an array of 10 size and
  you are accessing the arr[12] so you are accessing the unknown memory
  which is not yours so it will gives you error...
  
- If you are asking for memory but it doesnt have any memory left so error...

...so both conditions above will gives you error as segmentation fault.