C # append () Usage

Append () Usage

Class preson

{

Private string firstname;

Private string middletname;

Private string lastname; // defines three private variables: firstname middlename lastname

Public preson (string FN, string Mn, string ln) // Constructor

{

Firstname = FN;

Middlename = Mn;

Lastname = ln;

}

Public void displayfull name () // define a method name

{

Stringbuilder fullname = new stringbuilder (); // instantiate fullname

Fullname. append (firstname); // fullname = fullname + firstname full is empty. Only firstname is displayed.

Fullname. append (""); // fullname = fullname + "space" fullname already contains the value of firstname

If (middlename [0]! = "") // If the character in the first array of the intermediate name is not empty, run downward. Otherwise, the IF statement is displayed.

{

Fullname. append ("."); // if the condition is met, continue fullname = fullname + "."

Fullname. append (lastname); // value of fullname = fullname + lastname

Console. writeline (fullname); // output fullname

}

}

Public static void main ()

{

Person me = new person ("Bradley", "Lee", "Jones"); // instantiate

Me. displayfullname (); // call this function

}

Output result: Bradley L. Jones

Explanation: fullname-> Bradley assigns a value first.

Fullname-> Bradley _ add a space ("_" indicates that the space is not an underline)

Fullname-> bradley_l

Fullname-> bradley_l.

Fullname-> bradley_l.jones

Fullname = Bradley L. Jones