What is constant array?

What is constant array?

it’s a constant array of integers i.e. the address which z points to is always constant and can never change, but the elements of z can change.

How do you define Const in Delphi?

The Const keyword is used to start a section of constant definitions. The section is terminated by the next keyword in a program.

How do I write an array in Delphi?

“How to create an array in delphi” Code Answer

1. const.
2. Days : array[1..7] of string = (‘Mon’,’Tue’,’Wed’,’Thu’,’Fri’,’Sat’,’Sun’);
3. var.
4. i : Integer;
5. begin.
6. for i := 1 to 5 do // Show the weekdays.
7. ShowMessageFmt(‘Day %d = %s’,[i,Days[i]]);
8. end;

How do you find the length of an array in Delphi?

Use Length function to get the length of your array: var ArrayLength: Integer; begin ArrayLength := Length(ArrayOfSomething); end; From the reference for this function (emphasized by me):

How do you declare a constant array?

If you want to make an array constant, you can precede its type with the word const. When you do so, the array name is constant, and the elements inside the array are also constant. Thus you cannot have a constant array with nonconstant elements, nor can you have a nonconstant array with constant elements.

What is a constant variable?

A constant variable is one whose value cannot be updated or altered anywhere in your program. A constant variable must be initialized at its declaration.

How do you declare a constant?

You use the Const statement to declare a constant and set its value. By declaring a constant, you assign a meaningful name to a value. Once a constant is declared, it cannot be modified or assigned a new value. You declare a constant within a procedure or in the declarations section of a module, class, or structure.

Is it possible to define a constant value in a record?

Is it possible to define a CONSTANT value in a record? A CONSTANT is a reserved word whose value does not change at all.

How do you declare a constant array in Delphi?

Example Declaration of Three Constant Arrays Days[1] returns the Mon string. CursorMode is an array of two elements, whereby declaration CursorMode[false] = crHourGlass and CursorMode = crSQLWait. “cr*” constants can be used to change the current screen cursor. Items defines an array of three TShopItem records.

How do you count characters in Delphi?

Use below function. function CountCharInString(str: string; SearchChar: char): integer; // DESC: Returns the number of times a character occurs in a string. // PARAM: str – the string. // PARAM: SearchChar – the character to count the occurrences of. // RETURNS: The number of times SearchChar occurs in str.

How do you find the length of a string in Delphi?

var val : String; begin val:= ‘example’; ShowMessage(IntToStr(Length(val) * SizeOf(Char))); end; Or use ByteLength to obtain the size of a string in bytes. ByteLength calculates the size of the string by multiplying the number of characters in that string to the size of a character.

Can an array be a constant?

Arrays are Not Constants It does NOT define a constant array. It defines a constant reference to an array. Because of this, we can still change the elements of a constant array.