Basically, let\'s say I declare an array in int main() and then pass it to another function, can i then change what values the array holds? Something like:
In C++ if I get and return the address of a variable and the caller then immediately dereferences it, will the compiler reliably optimize out the two operations?
This question already has answers here: Why cast a pointer to a float into a pointer to a long, then dereference?
I have a Binary Search Tree that I\'m making and I implemented the Insert node code as follows: BSTNode * BST::Insert(const std::string & v){
I have a 2-dim const double matrix which needs to be passed as argument to a function that takes a (non-const) double** parameter.
Doing this: union{ int * integer; char * character; } u; u.integer = new in开发者_如何学Pythont; delete u.character;
here is my code: //MainWindow.h #ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QtGui> class MainWindow : public QWidget
Currently Visual C++ is shipped with run开发者_如何转开发time where malloc() is decorated with __declspec( restrict ).
I was wondering how to use a template with a function pointer as an 开发者_运维百科argument. For instance,
Even with int foo(char str[]); which will take in an array initialized to a string literal sizeof doesn\'t work. I was asked to do something like strlen and the approach I want to take is to use sizeo
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