Category "pointers"

Acces element of QVector pointer containing pointers

I have the following QVector pointer: QVector<someStruct*>* qvp; How can I acces someStruct members? Let's assume that qvp has some elements to access al

How to check c++ pointer pointing to invalid memory address?

Is there anyone show me how to check my pointer is pointing to an invalid memory address. #include<iostream> class Node{ public: int data; Node * ne

What is the size of a pointer?

Is the size of a pointer the same as the size as the type it's pointing to, or do pointers always have a fixed size? For example... int x = 10; int * xPtr = &a

warning: format ‘%s’ expects type ‘char ’, but argument 2 has type ‘char ()’

I am trying to run a simple C program but I am getting this error: warning: format ‘%s’ expects type ‘char *’, but argument 2 has ty

warning: format ‘%s’ expects type ‘char ’, but argument 2 has type ‘char ()’

I am trying to run a simple C program but I am getting this error: warning: format ‘%s’ expects type ‘char *’, but argument 2 has ty