Documentation
#include <iostream>: This is a preprocessor directive that includes theiostream(input/output stream) library. This library is necessary to use input and output functionalities, such as printing to the console.int main() { ... }: Themain()function is where every C++ program begins execution. The code within the curly braces{}is the body of the function and will be executed when the program runs.std::cout(or simplycout): This is the standard output stream object, used to send text to the console.<<: This is the insertion operator, used withcoutto insert data into the output stream."Hello, World!": The text inside the double quotes is a string literal that will be printed to the screen.std::endl(orendl): This inserts a newline character and flushes the output buffer, ensuring the text is immediately displayed on the console. A simpler alternative is to use the newline escape sequence\ninside the string, e.g.,"Hello World!\n".;: A semicolon ends every C++ statement.return 0;: This statement ends themainfunction and signals to the operating system that the program ran successfully.