C++ Programming Tutorials

C++ Programming Tutorials And Articles
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Introduction This article talks about how Virtual table and _vptr looks in case of simple Multiple Inheritance Background In Multiple Inheritance, the Derived class contains the _vptr of all it's Base classes. Lets see the below example, where-in, derived class i.e. Derive is derived...
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Introduction This article talks about size of a class with all possible scenarios like having simple data (with and without structure padding), virtual functions, Replicated and Shared Multiple Inheritance etc. Background Size of a class object is nothing but it's non-static member data +...
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Introduction This article explains about Callbacks and implmentation of it using below 3 different methods: Static Functions Non-Static or Member Functions Functor or Function Objects. Background
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Original Non English Version here. For simple applications, it's enough just to rely on automatic memory management through local variables. But once the data become larger, it is no longer imperative to request memory from the heap and manage. Content Function Families Allocators ...
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Introduction Code for solving system of equation by Gaussian elimination method. The Code is well commented and would not need any further explanation The code #include <stdio.h> #include <conio.h> #define N 100
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Introduction Gauss-siedel method to solve system of equations :undecided The code #include <stdio.h> #include <conio.h> #include <math.h>
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Introduction Lagranges interpolation formula The code #include <stdio.h> #include <conio.h> #define N 100
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Introduction List out all of the installed Windows Services In C++ The code #include <windows.h> #include <iostream.h> void ErrorDescription(DWORD p_dwError);
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Code for LinkList in C++ #include "LinkedList.h" /** * Construct the list */ template <class Object> List<Object>::List( ) {
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A virtual function is used where we want to allow the derived class to replace the implementation of the same function in base class. The compiler always calls the derived class function when called with object of the derived class or an object of base class holding the address of the derived class...
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Being an experienced C/C++ developer, sometimes there are modules in which the code layer which interact with the system is written in C while the layer above it is written in C++. Have you ever thought of how these two layers (one written in C and other in C++) interact? What if we want to call a...
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There are three techniques used to pass variables into a C or C++ functions. Pass by value C/C++ Pass a pointer by value C/C++ Pass by reference C++ only Pass by value The function receives a copy of the variable. This local copy has scope, that is, exists only within the function....
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The size of a class can be changed simply by playing with the order of its members' declaration: struct A { bool a; int b; bool c; }; /*sizeof (A) == 12*/ On my machine, sizeof (A) equals 12. This result might seem surprising because the total size of A's members is only 6...
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One benefit of C++ over C is its exception handling system. An exception is a situation in which a program has an unexpected circumstance that the section of code containing the problem is not explicitly designed to handle. In C++, exception handling is useful bcause it makes it easy to separate...
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Certain applications need to invoke startup functions that run before the main program starts. For example, polling, billing, and logger functions must be invoked before the actual program begins. The easiest way to achieve this is by calling these functions from a constructor of a global object....
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The Input/Output system in C++, holds information about the result of every I/O operation. The current status is kept in an object from type io_state, which is an enumerated type (just like open_mode) that has the following values: godbit -> No errors. eofbit -> End of file has been reached...
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C++ FAQ's I've spent the past few weeks learning C++, and here are a bunch of FAQ's I came up with. Some of these Q n A's are from various sources, but I have edited and revised them using my own words. What is C++? C++ is a computer programming language. Its name is literally...
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Introduction Memory allocation for objects is a tough issue, sometimes. Dynamically allocated memory has to be treated specially when one object is used to initialize another. In default constructor a bit wise copy is done when one object is assigned to another, leaving no room for separate...
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Function pointer - how to declare function pointer in structure and how it call ,see it. #include <stdio.h> #include <string.h> #include <stdlib.h> typedef struct strfunptr { float a; float b;
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Memory pools allow dynamic memory allocation comparable to malloc or the Operator new in C++. As those implementations suffer from fragmentation because of variable block sizes, it can be impossible to use them in a real time system due to performance. A more efficient solution is preallocating a...
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