3D array memory allocation dimensions

[Paul McKenzie]

cout << test[5][15][5]; //it should say, that i am off the array size with number 5 in depth dimension (program should throw exception),

Where did you get that erroneous information from?

but it will write some random number -21598 and doesnt throw any exception, that i am looking out of allocated memory

Welcome to the world of C++ programming.

When you make a mistake such as writing outside the boundaries of an array in a C++ program, there is nothing that guarantees how your program will behave. The program may throw an exception, or it may work without anything happening, or may throw an exception when run on your machine but run without anything happening on another machine, plain old crash without an exception, etc.

C++ is not Java or C#, or some other computer language that has these checks at runtime and automatically will inform you of a problem.

Regards,

Paul McKenzie