Thread: Calculating the length of a string

Originally Posted by robwhit

Okay...

Functions need arguments.

Arguments are values.

Values have types.

You specify those types when you define the function.

You pass a value of that type to the function when you call the function.

If you pass a value of a different type to the function, the code in the function might not work right.

Understand?

Code:

argument = values

values have types int, float, long, double, unsigned intenger, etc

Specify those value types when you define the function.

function prototype

return name ( take in )
{

}



You pass a value of that type to the function when you call the function?

What I take in or what I return in the function prototype?

This thread is quickly going nowhere...

Anyways, here's a simple outline of functions:

output = Function( input );

Note: it is possible to pass a pointer to a function and get some output in that pointer parameter, so you to be more accurate, this is also possible:

output = Function( input and/or output );

If a parameter is const then it obviously can only be input since it is read-only as far as that Function is concerned.
If the parameter is not a pointer, it also is only input because there is no way for the Function to modify the value outside of the function because it is a copy of the data, not the same data.

Here is a site with tutorials for things such as Functions (although this is C++, not C, but most of it applies to both languages): http://www.cplusplus.com/doc/tutorial/functions.html

BSmith4740,

When you post on these forums and not understanding the fundamentals, you will get a hard taste of reality.

So what's the best way to learn C? You can only read the book so many times. You can't talk to the book. You can't ask questions to the book. However, I do appreciate the help.

I would prefer you read the books below and code the exercises given. The books below are what I use for reference and as well as these forums.

"The C book"
http://www.amazon.com/Programming-La...5024293&sr=8-3


"A book on C"
http://www.amazon.com/Book-C-Program...5024354&sr=1-1


The best way to learn any language is to code and code and code. You must practice any sport to be come efficient to become good at it, this goes with learning any programming language as well.