please tell me 1 example for lack of orthogonality in C?

Question

please tell me 1 example for lack of orthogonality in C language..?

Answer 1

I would say that the lack of bounds checking in array access would qualify.
Bounds checking incurs a lot of overhead which is not needed in a properly written program.
C is designed with the idea that one has to trust the programmer. If the programmer thinks that a bounds check is needed he must explicitly program it everywhere he accesses the array.
This is one of the advantages of C++ objects where a single bounds check can be made in the array access methods as well as allowing for non-bounds-checked access.