LESSON 1: THE BASIC C++ PROGRAM:

//Start of file
void main()
{
}
//End of file

... and that's all that a program needs to be.  EVERY program will contain something similar to that first line of code: void main().

In C, you may have to create it like this:
//Start of file
int main()
{
}
//End of file
or like this:
//Start of file
int main(int args, char** argv)
{
}
//End of file
or something like that - I'm not really familiar with passing variables into the main function.

However, a more common basic C++ program is as follows:

//Start of file
//Include statements
#include <iostream>
//The namespace we are going to be using
using namespace std;

void main()
{
	cout << "Hello World!";
}

//End of file

The C variation looks like:

//Start of file
//Include statements
#include <stdlib.h>

int main()
{
	printf("Hello World!");
}

//End of file

If you are very very confused at this point - good.  You aren't supposed to understand what ANY of this is yet.  I'm going to explain each point 
now.

points to understand these programs:
1.) lines that begin with a "//" are comments.  These lines are COMPLETELY ignored by the compiler.  These are ONLY to help a programmer remember 
the purpose of a section of your program, or to help others understand what your program is doing.

2.) #include <iostream> - A preprocessor directive that tells the preprocessor to slap another program on at the top of your program.  iostream 
stands for "Input-Output stream".  This is a very complicated program which includes many other programs which include other programs, so on and 
so forth - to define various "functions" that enable you to input and output information.
The C variations #include <stdlib.h> is different.  Stdlib.h is a list of standard "functions", which are used by programmers over and over again. 
 This includes the C-style input and output "functions"

3.) void main() - the main function - this is where your program begins running.  More on this later (C variation is "int main()")

4.) cout << "Hello World!"; - Output.  Just know that this causes the words "Hello World!" to appear on your screen just before your program 
terminates.  Same with the C variation :"printf("Hello World!");"

Still confused?  You should be.  According to me, you shouldn't:
know what the hell a "stream" is.
know what the hell a "function" is.

You should also be confused about the difference between "#include <iostream>"  and "#include <stdlib.h>".  Why does stdlib have a .h? and why 
doesn't iostream?.  More on all of the above, later.

you SHOULD, however, understand the void main() part.  This is where ALL C++ programs start.