Code:

#include

using namespace std;

int main() {

cout << "Hello World";

return 0;

}

Now let's break down each line and explain its purpose:

1. ‘ #include using namespace std;’: This line is a preprocessor directive that includes the header file ‘‘. The ‘‘ header provides input/output stream functionality in C++. It allows us to use the ‘ cout’ object to print output and the ‘ cin’ object to receive input.

2. ‘using namespace std’: The objects like cin and cout are part of the ‘std’ namespace, which contains standard C++ library elements. By using this, we explicitly specify that we are using these objects from the ‘std’ namespace.

2. ‘int main() {‘: This line starts the definition of the main function, which is the entry point of a C++ program. The execution of the program begins from here.

3. ‘cout << "Hello World";’: This line uses the ‘cout’ object, which represents the standard output stream, to print the string "Hello World". The ‘<<‘ operator is used to insert the string into the output stream.

4. ‘return 0;’: This line indicates that the program has completed successfully and returns an integer value of 0 to the operating system. In C++, returning 0 from the ‘main()’ function signifies that the program executed without any errors.

When the program is executed, it will display "Hello World" on the console or terminal.