Question about a function

Just wanted to ask what does this do

display(val);

I tryed looking in the reference tab but couldn’t get anything. If anyone can help me I would be very grateful.

P.S. here's some more code with the "display function:

PORTD = PORTD & 0x00
PORTD = display[x];

arduinohabib:
Just wanted to ask what does this do

display(val);

I tryed looking in the reference tab but couldn't get anything. If anyone can help me I would be very grateful.

Looks like a function call to a function named 'display' with an argument named 'value'. You'll have to give more information if you want a more specific answer. For example, do you include any libraries that might define the 'display' function?

arduinohabib:
P.S. here's some more code with the "display function:

PORTD = PORTD & 0x00

PORTD = display;

This looks like an array named 'display' is being indexed by the variable named 'x'. Again, I don't see a declaration of 'display' or 'x' so I can't be sure.

It's some code for a seven segment display(that's right Mr. John), here's some more code.

display[] = {
B00111111, // 0 
B00000110, // 1
B01011011, // 2
B01001111, // 3
B01100110, // 4
B01101101, // 5
B01111011, // 6
B00000111, // 7
B01111111, // 8
B01101111, // 9
}
// write the digits, assume PORTD with bit0 = asegment, 1=b,2=c,3=d,4=e,5-f,6=g, 7=decimal point it used
//    a
// f    b
//    g
// e   c
//    d
// clear the bits
PORTD = PORTD & 0x00
// now set the font
PORTD = display[x]; // x = 0 to 9, or bigger if define some other characters: A,b,C,d,E,F,H,L,P,U, -,_,

I don't understand your question.
That code shows display as an array.
If you want help the post ALL your code and ask a question about it.
If you don't want help then stop wasting everyone's time.

What is this "x" of which you speak?

Oh sorry in the IDE "display" was in orange so I thought it was a function.