A GUI, or graphical user interface, is a very important component of a program. It makes the program easy to work with for the user so that they don't have to deal directly with coding.
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GUI use full quality of vedio card and make the programming languages easy to draw perfect images and pictures on desktop.
GUI is a Graphical User Interface, which is for making "Windowed" Applications. The CLI is a Command-Line Interface, which is a text prompt in which you can enter specific commands to be executed.
A function statement is a block where the function is declared and defined.
I will explain in the easiest way the difference between the function and recursive function in C language. Simple Answer is argument of the function is differ but in the recursive function it is same:) Explanation: Function int function(int,int)// function declaration main() { int n; ...... ...... n=function(a,b); } int function(int c,int d) { ...... ...... ...... } recursive Function: int recursive(int,int)// recursive Function declaration main() { int n; ..... ..... ..... ..... n=recursive(a,b); } int recursive(int a,int b) { ..... .... .... .... } Carefully see, In the recursive Function the function arguments are same.
When defining your function, do not put any arguments in the definition (e.g. function myFuntion()). Inside the function, you can use func_num_args() and func_get_arg($number) to get the function's arguments.