C++ by

Introduction

luke5083 — 2014-04-29 18:03:52 UTC

C++ is very simple to learn but it can get complacated. Just follow this and you'll learn everything!

Starting Out

luke5083 — 2014-04-29 18:08:01 UTC

The fisrt thing to do is tell the computer how your're going to write it.

include 
using namespace std;

This is the basic code to start a program this tells C++ that it needs to use this format of code. You need to add this at the begging of each file, on the first two lines of code.

Saving a File

luke5083 — 2014-04-29 18:12:26 UTC

In order to save a file you can use a special complier for C++ or use a blank text file. But you always need to save it as a ".cpp" file.

Functions

luke5083 — 2014-04-29 18:15:20 UTC

Now we are going to learn how to bulid a basic function. A function is what makes the program do things. There can be more than one function. We are going to learn how to print things on a screen.

int main(){

} The first line of code is the start of the function. The int part tells it what it is working with. The main part is the name of the function. The () part are parameters, we will learn about those later. The {} part is what is inside of the function, it's like the bread of a sandwich, it hold everything in. You can change the name to anything you want.

Displaying Text

luke5083 — 2014-04-29 18:26:35 UTC

Now for the fun part. Displaying text!

You always put it inside of a function, but it cannot be inside of a void function, which we'll learn about later. You use the cout function which means command out.

cout << "Hi" << endl;

This the << is what it is out putting it could be text in parenthes or a varriable which we will get to later on.

Varribles

luke5083 — 2014-05-13 18:08:47 UTC

A varrible is something that holds something else. There are many types of varribles like int that holds numbers, string that holds letters and numbers, and double which hold decimals like 5.41. We are going to make an int varrible and display it on the screen. Again make sure you put it in the main function.

int a = 1;

cout << a << endl; The int is what tells C++ to store a whole number. The a is the name that we gave our