The page contains examples on basic concepts of C++. You are advised to take the references from these examples and try them on your own. All the programs on this page are tested and should work on all platforms.

The execution of code begins from the main() function. This function is mandatory. This is a valid C++ program that does nothing. int main() { // Write your code here } In the next tutorial, we will learn about comments in C++.

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In main(), we assigned the values of length, breadth, and height with the code: room1.length = 42.5; room1.breadth = 30.8; room1.height = 19.2; We then called the functions calculate_area() and calculate_volume() to perform the necessary calculations.

Basic Structure of a C++ Program. As we have seen from the last example, a C++ program requires a lot of lines even for a simple program. For now, just remember that every C++ program we will write will follow this structure: #include <iostream> using namespace std; int main() { // your code return 0; }

The code execution begins from the start of the main() function. cout is an object that prints the string inside quotation marks " " . It is followed by the << operator.

Source code to add two numbers using three variables and two variables in C++ programming..

In this tutorial, we will learn about the C++ function and function expressions with the help of examples. A function is a block of code that performs a specific task.

Easier to Maintain: OOP allows code to be broken down into smaller, more manageable pieces. Code Reusability: As objects and classes can be reused across different parts of the program and even across different programs, OOP minimizes code duplication.