What happens when you try to retrieve the array element outside Bound?

What happens when you try to retrieve the array element outside Bound?

If we use an array index that is out of bounds, then the compiler will probably compile and even run. But, there is no guarantee to get the correct result. Result may unpredictable and it will start causing many problems that will be hard to find. Therefore, you must be careful while using array indexing.

Does C++ check for array indices within bound?

Note that C and C++ do not do bounds checking on arrays, so stuff like that isn’t going to be caught at compile or run time. When you initialize the array with int array[2] , space for 2 integers is allocated; but the identifier array simply points to the beginning of that space.

What will happen if you access the array more than its dimensions?

You cannot access the elements that are greater to the size of the array. If you try to access the array position (index) greater than its size, the program gets compiled successfully but, at the time of execution it generates an ArrayIndexOutOfBoundsException exception.

Why does C + + not complain about out of bounds?

When you try to access beyond what you allocated, you are really just using a pointer to other memory (which C++ won’t complain about). Taking my example program above, that is equivalent to this: The compiler won’t complain because in programming, you often have to communicate with other programs, especially the operating system.

Why is array bound checking not done in C + +?

C++ design principle was that it shouldn’t be slower than the equivalent C code, and C doesn’t do array bound checking. C design principle was basically speed as it was aimed for system programming. Array bound checking takes time, and so is not done.

Why is accessing an array out of bounds gives no error?

There is a lot that is not specified by the language standard, for a variety of reasons. This is one of them. In general, whenever you encounter undefined behavior, anything might happen. The application may crash, it may freeze, it may eject your CD-ROM drive or make demons come out of your nose.