C Programming Language :: arrays and pointers question


	arrays and pointers question I have structs that looks like this: struct StructA { //members .. }; struct StructB { //members .. struct StructA * ptr_ }; ptr_ is actually a ptr to an array of StuctA types. My question is, how may I index into the array (pointed to by ptr_) given an index - (I intentionally ignored array bounds checking to keep the question simple) - Hide quoted text - Bart Simpson <123evergr@terrace.com> writes: > I have structs that looks like this: > struct StructA > { > //members .. > }; > struct StructB > { > //members .. > struct StructA * ptr_ > }; > ptr_ is actually a ptr to an array of StuctA types. My question is, > how may I index into the array (pointed to by ptr_) given an index - Given: struct StructB b; you may access the element with index `i' with: b.ptr_[i] -- "The fact that there is a holy war doesn't mean that one of the sides doesn't suck - usually both do..." --Alexander Viro > Given: > struct StructB b; > you may access the element with index `i' with: > b.ptr_[i] But you have to allocate the memory because * ptr_ is pointed random memory. quasimodo wrote: >> Given: >> struct StructB b; >> you may access the element with index `i' with: >> b.ptr_[i] > But you have to allocate the memory because * ptr_ is pointed random > memory. struct StructA a[2]; b.ptr_ = a; -- Tor <torust [at] online [dot] no>