Left Quote    Nearly all men can stand adversity, but if you want to test a man's character, give him power.
- Abraham Lincoln    
Right Quote
[login] | [Register]

C Tutorial

by: Jester
Page: 8 of 10
(View All)


C allows you to create your own functions. Functions accept parameters and return a result. They let us simplify our programs into sections that can be called by other sections. Let's have a look at a simple example:

Now remember we said a functions returns a value. We put void because our function doesn't. if we expected it to return an int value, we put int. if a char, we put char, etc. We then declare the name of the function and the code to be executed goes between the curly braces.


Is how we call the function, we must use the () in the call to tell the compiler we're calling a function. Our program uses no parameters and returns no result, it is a very simple function. But it shows you the structure and how to declare one. We could now use this in a program.

Functions allow us to break up the program, if we wanted to print out the info about our program over and over in differen parts of a program, it's easier to use a function and just call it.

Returning a Value

We can return values from a function, take a look below:

Now our function returns a result, it returns an integer. We add 2 and 3 together, assign the result to the_sum and then return it.

So we define the return type as int:

int our_sum()

Then we write the function that adds to numbers together. Then we open the main() function of our program and assign the result returned from our function to a variable:

sum = our_sum();

That's returning a result, the result the function returned was assigned to sum.

1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |  10  |  
Next »

No Comments for this page.

You Must be logged in or a member to comment.

Tutorial Stats

Tutorial Stats

0 Total Comments
3.33 Rating of 5 (3 Votes)


Tutorial Options

· Login to Rate This Article
· Login to Post a Comment
· Read more by this author
Digg This Article! Bookmark This Article Reddit: Bookmark This Article BlinkList: Blink This Article! YahooMyWeb BlogMarks: Add This Mark! Furl: Save This Article Spurl: Mark This Article



· Beginning Visual C++ 6.0
Your Article Here

"" Copyright © 2002-2018; All rights lefted, all lefts righted.
Privacy Policy  |  Internet Rank