We explained how to declare and define simple functions. They had no return, and in a previous post we explained that main function has an integer return that represents our code is successfully done or not. In C++ programming language, we can easily define many functions and some functions may have return values some may not. We can return single variables like integer numbers (int), floating…
Functions, also known as Procedures or Sub-Programs, Sub-Algorithms, allow to structure programs in segments of code to perform tasks. A Function is a group of statements that has function a name and can be called with parameters to operate, functions can be called from…
The Main Function is the main part of an application coded in C++, it is the designated entry point to a program that is executed in an operating system (on Windows, iOS, Mac-OS, Android, Linux etc.). Every C++ application program has a main function which starts all…
Learn C++ With Modern C++ Safety and Security At 20 by Matthew Butler (CPPCon 2020) Video
April 18, 2021
With the features and language improvements aim to be more comprehensive than even C++11, the C++20 standard is now complete. Engineers employed in safety critical systems, protection or even applications that are exploited by customers every day have special language needs. In this video, you will be looking into the latest features and updates to the specification and see how they affect code…
Do you want to learn how to overload a function ? What is Function Overloading ? What does overloaded function means ? How we can use Function Overloading in C++ ? How we can use multiple parameter types in our functions ? Here we go,Function Overloading is used to operate…
Learn C++ With Back to Basics: Move Semantics by David Olsen (CPPCon 2020) Video
April 16, 2021
One of the many powerful improvements of C++11 is Move Semantics. It addresses a variety of programming problems that have been vexed by C++ developers for years. However, moving semantics can be easily misused, and the nuances are often difficult to get correct. This…
1. Memory Address of a Variable
The RAM (Random Access Memory) is the memory of a computer that can be read and changed in any order, typically used to store working data and machine codes. In some operations, we use ROM (Read Only Memory), In our applications, we have a lot of variables and every variable stored in the RAM and it takes space in the memory, These variables have a memory…
The goto statement is used to jump to a label that provides an unconditional jump from the goto to a labeled statement in the same function. We can also do the same loops as the same in for() while() loops by using goto statement. Instead of goto we mostly use for()…
Our screens are 2D dimensional planes and consists of pixels in X and Y directions. How we display a 3D object in this 2D plane ? 3D objects in our 2D screens are projection of 3D coordinates by using mathematical calculations. In 3D operations, i.e. in 3D graphics, 3D…
In a previous post, we learned that pointers are variables to point address which is also an integer value. That means we can do arithmetic operations on a pointer variable. But do not forget that we operate on the addresses in our RAMs, so we should be careful and we should know the range well. Simply, we can use ++, –, +, and – arithmetic operators on pointers:
In a 32bit application…
