C++ works by giving (separate) instructions to the computer

• Instructions can be treated as assignments

Assignment will be…

• Called a function

The primary function used in C++

• Is called main

Function’s name is

• Followed by an opening and a closing parentheses

Main function will always be written

• At least as main()

When a program is written and you ask the computer to “execute” it, the first thing to look for

• Is the main() function
• This means that every C++ program should have the main() function

Function has

• A body; this is where the behavior (assignment) of the function would be “described”

 


The body of a function

• Starts with an opening curly bracket “{” and closes with a closing curly bracket “}“
• Everything in the curly brackets belongs to, or is part of, the function

The main() function can be written as (A-1):


Example of (A-1)

main(){}

Whenever you create a program

• It is important to isolate any inclusion of a library on its own line (A-2)

Example of (A-2)

#include <iostream>
using namespace std;
main(){}