Basics of programming-Variables and functions.

Basics of programming-Variables and functions.

Variables are basically a container containing any value. For e.g., a glass is a variable and water is its value. Further a variable has a type.

A type can be specified as narrowing the values a variable can hold.

For e.g., -              

List of variables in C#

Type	Description	Size (bytes)	Example
int	Whole numbers	4	1,0,-1
long	Whole numbers (bigger range)	8	Same as int but is greater in range
float	Floating-point numbers	4	.2
char	Single character	2	Single alphabet
bool	Boolean	1	True or false
DateTime	Moments in time	8	0:00:00 on 01/01/2001
string	Sequence of characters	2 per character	Name, Hello

In unity this data types can further be expended. In unity a variable can contain some of the datatype like Gameobject, Vector3 and Transform.

Functions

In common language functions can be said to any container which consist certain group of statements which defines the procedure of any event happening, Declared by the programmer. A function is mainly used to write a certain event happening once and use it time to time as needed in your code.

This practice enable us to use a function by its name and call it anywhere in our code when needed.

To use a function all you have to do is:

Definea Function- For defining a function just write following code.

Syntax: Void SomeFunction()

{

Set of statements

}

And to calla function simply write the name of function followed by brackets.

       
     Syntax: SomeFunction();

(Note: A function calling is always ends with a semicolon (;) symbol whereas defining of function consist of its type name parameters and its body.)

Make sure to declare your function name with a capital letter doing so is a good practice.

Parameters of function will be explained in detail in upcoming blogs.

Quick Tip: Always make sure your file name and class name are same otherwise unity will raise an error.