To assist self-study of C programming through code reading, we have studied the value trace problem (VTP). In a VTP instance, a source code and a set of questions are given to students. Each question asks the actual value of an important variable or an output message in the code. The...
the pointer ‘ptr’ contained the address of ‘ch’ and in the next line it contained the address of ‘c’. In other words, we can say that Initially ‘ptr’ pointed to ‘ch’ and then it pointed to ‘c’.
I have unintentionally raised a large debate recently concerning the question if it is legal in C/C++ to use the &P->m_foo expression with P being a null pointer. The programmers' community divided into two camps. The first claimed with confidence that it wasn't legal while the others ...
Some time ago I was told there were problems in the standard, where attributes were incorrectly allowed or disallowed within certain grammatical productions, against the intent of the design. This is a vague memory, so I don't know to what extent the claim is or was true, but it could pa...
It may also have various section views (Section A-A, Section B-B, Section C-C). All graphical objects that are in a particular view are assigned the same number. The only other type of drawing on which you might find multiple views is a submaterial detail . Assigning the correct ...
I have unintentionally raised a large debate recently concerning the question of whether it is legal in C/C++ to use the &P->m_foo expression with P being a null pointer. The programmers′ community...
One key use of pointers is to use inheritance in order to have a common interface to a related set of types. I like the shape example to demonstrate this. There is a base class called shape, which has a virtual function called area, which is then implemented in the derived classes ...
Dynamic Allocation of Multi-dimensional Array Related problems: – memory leak – dangling pointer Dynamic Memory Allocation Questions: Does the statement delete ptr; delete the pointer ptr or the object being referred by ptr? C++ Reference Type In C++, reference type provides an alternative name fo...
The Art and Science of C Pointer: Address Data Our first observation is simply that since addresses are numbers, they can be stored in memory as data. Int x,*ptr; x=2; ptr=&x; ptr The Art and Science of C Pointer to a Variable When one variable holds the address of another, we ...
Write a program in C to store n elements in an array and print the elements using a pointer. Test Data : Input the number of elements to store in the array :5 Input 5 number of elements in the array : element - 0 : 5 element - 1 : 7 ...