No, that is wrong. The second example from your initial post (sizeof(struct Vector*)) returns the size of a pointer which is 4 or 8 with 32-bit or 64-bit builds.
The sizeof[^] operator expands to the size of the argument during compilation. If the argument is not a type but a variable, the type of the variable is returned. If the variable is a pointer, the pointer must be dereferenced using the * operator to get the size of the type instead the size of the pointer. Similar applies when the type is a pointer itself.
But when passing a type followed by * like in your second example, it is a pointer to the type. In that case the type does not care because all pointers have the same size.
Maybe you are irritated how the * operator is treated. With declarations it indicates a pointer. When accessing variables, it accesses the content of pointer variables.
I have a single doc multiple views app in a tabbed view type mainframe. I have printing working nicely for each view on its own, but I need to print all views in one 'report'. I started by adding a "Print All" command in CMainFrame, and then traversing all document views (as CView pointers), but it gets very messy for a few reasons:
- each view must be cast to its RUNTIME_CLASS and checked to find which it is, so that its OnPrint function can be called
- each view has different scaling, so a single CPrintInfo won't suffice
- its not known in advance how many pages to set, but this can be overcome with m_bContinue checks.
Any suggestions on how to print a single document multiple views please?
This function is a member function of the STL list class and I do not understand the bolded part. I understand the const T& el is a reference to a constant parameter which means I cannot change the value/content of the passed argument + I understand that el = T() means a default parameter so if there is no argument passed in the calling function the el will use the no-argument constructor of the T() type OK. But what make me confused the el at the beginning before the const?!!! so if someone can fill the blank gaps for me I will be grateful . Thanks in advance.
I read it in a book called "Data Structures and Algorithms in C++, 4th Edition by Adam Drozdek" it was in chapter 3 "Linked Lists" at the beginning of page 110 . It made me had the feeling of this when read it, and after searching and find nothing I become like this ;P;P (i.e., psycho). Thanks by the way for reply
sorry...didnt mean to be rude its just a test i saw somewhere and i dont know how to do it...all i want is for you guys to tell me what its under or explain what im supposed to do not to write the program. I'm a beginner in C++...Pls guys
Last Visit: 5-Jul-20 20:31 Last Update: 5-Jul-20 20:31